20013915

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 33465600

約数和(自身を除く): 13451685

約数列:

[1, 3, 5, 15, 29, 87, 139, 145, 331, 417, 435, 695, 993, 1655, 2085, 4031, 4965, 9599, 12093, 20155, 28797, 46009, 47995, 60465, 138027, 143985, 230045, 690135, 1334261, 4002783, 6671305, 20013915]

約数ペア:

[(1, 20013915), (3, 6671305), (5, 4002783), (15, 1334261), (29, 690135), (87, 230045), (139, 143985), (145, 138027), (331, 60465), (417, 47995), (435, 46009), (695, 28797), (993, 20155), (1655, 12093), (2085, 9599), (4031, 4965)]