31885980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 106767360

約数和(自身を除く): 74881380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 79, 84, 93, 105, 124, 140, 155, 158, 186, 210, 217, 237, 310, 316, 372, 395, 420, 434, 465, 474, 553, 620, 651, 790, 868, 930, 948, 961, 1085, 1106, 1185, 1302, 1580, 1659, 1860, 1922, 2170, 2212, 2370, 2449, 2604, 2765, 2883, 3255, 3318, 3844, 4340, 4740, 4805, 4898, 5530, 5766, 6510, 6636, 6727, 7347, 8295, 9610, 9796, 11060, 11532, 12245, 13020, 13454, 14415, 14694, 16590, 17143, 19220, 20181, 24490, 26908, 28830, 29388, 33180, 33635, 34286, 36735, 40362, 48980, 51429, 57660, 67270, 68572, 73470, 75919, 80724, 85715, 100905, 102858, 134540, 146940, 151838, 171430, 201810, 205716, 227757, 257145, 303676, 342860, 379595, 403620, 455514, 514290, 531433, 759190, 911028, 1028580, 1062866, 1138785, 1518380, 1594299, 2125732, 2277570, 2657165, 3188598, 4555140, 5314330, 6377196, 7971495, 10628660, 15942990, 31885980]

約数ペア:

[(1, 31885980), (2, 15942990), (3, 10628660), (4, 7971495), (5, 6377196), (6, 5314330), (7, 4555140), (10, 3188598), (12, 2657165), (14, 2277570), (15, 2125732), (20, 1594299), (21, 1518380), (28, 1138785), (30, 1062866), (31, 1028580), (35, 911028), (42, 759190), (60, 531433), (62, 514290), (70, 455514), (79, 403620), (84, 379595), (93, 342860), (105, 303676), (124, 257145), (140, 227757), (155, 205716), (158, 201810), (186, 171430), (210, 151838), (217, 146940), (237, 134540), (310, 102858), (316, 100905), (372, 85715), (395, 80724), (420, 75919), (434, 73470), (465, 68572), (474, 67270), (553, 57660), (620, 51429), (651, 48980), (790, 40362), (868, 36735), (930, 34286), (948, 33635), (961, 33180), (1085, 29388), (1106, 28830), (1185, 26908), (1302, 24490), (1580, 20181), (1659, 19220), (1860, 17143), (1922, 16590), (2170, 14694), (2212, 14415), (2370, 13454), (2449, 13020), (2604, 12245), (2765, 11532), (2883, 11060), (3255, 9796), (3318, 9610), (3844, 8295), (4340, 7347), (4740, 6727), (4805, 6636), (4898, 6510), (5530, 5766)]