31818920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5981}}^1$

素因数の和:6018

約数の個数: 64

約数和(自身を含む): 86140800

約数和(自身を除く): 54321880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 5320, 5981, 11962, 23924, 29905, 41867, 47848, 59810, 83734, 113639, 119620, 167468, 209335, 227278, 239240, 334936, 418670, 454556, 568195, 795473, 837340, 909112, 1136390, 1590946, 1674680, 2272780, 3181892, 3977365, 4545560, 6363784, 7954730, 15909460, 31818920]

約数ペア:

[(1, 31818920), (2, 15909460), (4, 7954730), (5, 6363784), (7, 4545560), (8, 3977365), (10, 3181892), (14, 2272780), (19, 1674680), (20, 1590946), (28, 1136390), (35, 909112), (38, 837340), (40, 795473), (56, 568195), (70, 454556), (76, 418670), (95, 334936), (133, 239240), (140, 227278), (152, 209335), (190, 167468), (266, 119620), (280, 113639), (380, 83734), (532, 59810), (665, 47848), (760, 41867), (1064, 29905), (1330, 23924), (2660, 11962), (5320, 5981)]