31221960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 256

約数和(自身を含む): 121651200

約数和(自身を除く): 90429240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 31, 33, 35, 40, 42, 44, 55, 56, 60, 62, 66, 70, 77, 84, 88, 93, 105, 109, 110, 120, 124, 132, 140, 154, 155, 165, 168, 186, 210, 217, 218, 220, 231, 248, 264, 280, 308, 310, 327, 330, 341, 372, 385, 420, 434, 436, 440, 462, 465, 545, 616, 620, 651, 654, 660, 682, 744, 763, 770, 840, 868, 872, 924, 930, 1023, 1085, 1090, 1155, 1199, 1240, 1302, 1308, 1320, 1364, 1526, 1540, 1635, 1705, 1736, 1848, 1860, 2046, 2170, 2180, 2289, 2310, 2387, 2398, 2604, 2616, 2728, 3052, 3080, 3255, 3270, 3379, 3410, 3597, 3720, 3815, 4092, 4340, 4360, 4578, 4620, 4774, 4796, 5115, 5208, 5995, 6104, 6510, 6540, 6758, 6820, 7161, 7194, 7630, 8184, 8393, 8680, 9156, 9240, 9548, 9592, 10137, 10230, 11445, 11935, 11990, 13020, 13080, 13516, 13640, 14322, 14388, 15260, 16786, 16895, 17985, 18312, 19096, 20274, 20460, 22890, 23653, 23870, 23980, 25179, 26040, 27032, 28644, 28776, 30520, 33572, 33790, 35805, 35970, 37169, 40548, 40920, 41965, 45780, 47306, 47740, 47960, 50358, 50685, 57288, 67144, 67580, 70959, 71610, 71940, 74338, 81096, 83930, 91560, 94612, 95480, 100716, 101370, 111507, 118265, 125895, 135160, 141918, 143220, 143880, 148676, 167860, 185845, 189224, 201432, 202740, 223014, 236530, 251790, 260183, 283836, 286440, 297352, 335720, 354795, 371690, 405480, 446028, 473060, 503580, 520366, 557535, 567672, 709590, 743380, 780549, 892056, 946120, 1007160, 1040732, 1115070, 1300915, 1419180, 1486760, 1561098, 2081464, 2230140, 2601830, 2838360, 3122196, 3902745, 4460280, 5203660, 6244392, 7805490, 10407320, 15610980, 31221960]

約数ペア:

[(1, 31221960), (2, 15610980), (3, 10407320), (4, 7805490), (5, 6244392), (6, 5203660), (7, 4460280), (8, 3902745), (10, 3122196), (11, 2838360), (12, 2601830), (14, 2230140), (15, 2081464), (20, 1561098), (21, 1486760), (22, 1419180), (24, 1300915), (28, 1115070), (30, 1040732), (31, 1007160), (33, 946120), (35, 892056), (40, 780549), (42, 743380), (44, 709590), (55, 567672), (56, 557535), (60, 520366), (62, 503580), (66, 473060), (70, 446028), (77, 405480), (84, 371690), (88, 354795), (93, 335720), (105, 297352), (109, 286440), (110, 283836), (120, 260183), (124, 251790), (132, 236530), (140, 223014), (154, 202740), (155, 201432), (165, 189224), (168, 185845), (186, 167860), (210, 148676), (217, 143880), (218, 143220), (220, 141918), (231, 135160), (248, 125895), (264, 118265), (280, 111507), (308, 101370), (310, 100716), (327, 95480), (330, 94612), (341, 91560), (372, 83930), (385, 81096), (420, 74338), (434, 71940), (436, 71610), (440, 70959), (462, 67580), (465, 67144), (545, 57288), (616, 50685), (620, 50358), (651, 47960), (654, 47740), (660, 47306), (682, 45780), (744, 41965), (763, 40920), (770, 40548), (840, 37169), (868, 35970), (872, 35805), (924, 33790), (930, 33572), (1023, 30520), (1085, 28776), (1090, 28644), (1155, 27032), (1199, 26040), (1240, 25179), (1302, 23980), (1308, 23870), (1320, 23653), (1364, 22890), (1526, 20460), (1540, 20274), (1635, 19096), (1705, 18312), (1736, 17985), (1848, 16895), (1860, 16786), (2046, 15260), (2170, 14388), (2180, 14322), (2289, 13640), (2310, 13516), (2387, 13080), (2398, 13020), (2604, 11990), (2616, 11935), (2728, 11445), (3052, 10230), (3080, 10137), (3255, 9592), (3270, 9548), (3379, 9240), (3410, 9156), (3597, 8680), (3720, 8393), (3815, 8184), (4092, 7630), (4340, 7194), (4360, 7161), (4578, 6820), (4620, 6758), (4774, 6540), (4796, 6510), (5115, 6104), (5208, 5995)]