19868520

素因数分解:

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

素因数の和:168

約数の個数: 192

約数和(自身を含む): 72230400

約数和(自身を除く): 52361880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 49, 56, 60, 62, 70, 84, 93, 98, 105, 109, 120, 124, 140, 147, 155, 168, 186, 196, 210, 217, 218, 245, 248, 280, 294, 310, 327, 372, 392, 420, 434, 436, 465, 490, 545, 588, 620, 651, 654, 735, 744, 763, 840, 868, 872, 930, 980, 1085, 1090, 1176, 1240, 1302, 1308, 1470, 1519, 1526, 1635, 1736, 1860, 1960, 2170, 2180, 2289, 2604, 2616, 2940, 3038, 3052, 3255, 3270, 3379, 3720, 3815, 4340, 4360, 4557, 4578, 5208, 5341, 5880, 6076, 6104, 6510, 6540, 6758, 7595, 7630, 8680, 9114, 9156, 10137, 10682, 11445, 12152, 13020, 13080, 13516, 15190, 15260, 16023, 16895, 18228, 18312, 20274, 21364, 22785, 22890, 23653, 26040, 26705, 27032, 30380, 30520, 32046, 33790, 36456, 40548, 42728, 45570, 45780, 47306, 50685, 53410, 60760, 64092, 67580, 70959, 80115, 81096, 91140, 91560, 94612, 101370, 106820, 118265, 128184, 135160, 141918, 160230, 165571, 182280, 189224, 202740, 213640, 236530, 283836, 320460, 331142, 354795, 405480, 473060, 496713, 567672, 640920, 662284, 709590, 827855, 946120, 993426, 1324568, 1419180, 1655710, 1986852, 2483565, 2838360, 3311420, 3973704, 4967130, 6622840, 9934260, 19868520]

約数ペア:

[(1, 19868520), (2, 9934260), (3, 6622840), (4, 4967130), (5, 3973704), (6, 3311420), (7, 2838360), (8, 2483565), (10, 1986852), (12, 1655710), (14, 1419180), (15, 1324568), (20, 993426), (21, 946120), (24, 827855), (28, 709590), (30, 662284), (31, 640920), (35, 567672), (40, 496713), (42, 473060), (49, 405480), (56, 354795), (60, 331142), (62, 320460), (70, 283836), (84, 236530), (93, 213640), (98, 202740), (105, 189224), (109, 182280), (120, 165571), (124, 160230), (140, 141918), (147, 135160), (155, 128184), (168, 118265), (186, 106820), (196, 101370), (210, 94612), (217, 91560), (218, 91140), (245, 81096), (248, 80115), (280, 70959), (294, 67580), (310, 64092), (327, 60760), (372, 53410), (392, 50685), (420, 47306), (434, 45780), (436, 45570), (465, 42728), (490, 40548), (545, 36456), (588, 33790), (620, 32046), (651, 30520), (654, 30380), (735, 27032), (744, 26705), (763, 26040), (840, 23653), (868, 22890), (872, 22785), (930, 21364), (980, 20274), (1085, 18312), (1090, 18228), (1176, 16895), (1240, 16023), (1302, 15260), (1308, 15190), (1470, 13516), (1519, 13080), (1526, 13020), (1635, 12152), (1736, 11445), (1860, 10682), (1960, 10137), (2170, 9156), (2180, 9114), (2289, 8680), (2604, 7630), (2616, 7595), (2940, 6758), (3038, 6540), (3052, 6510), (3255, 6104), (3270, 6076), (3379, 5880), (3720, 5341), (3815, 5208), (4340, 4578), (4360, 4557)]