10121980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 23425920

約数和(自身を除く): 13303940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 331, 556, 662, 695, 1324, 1390, 1529, 1655, 2780, 3058, 3310, 3641, 6116, 6620, 7282, 7645, 14564, 15290, 18205, 30580, 36410, 46009, 72820, 92018, 184036, 230045, 460090, 506099, 920180, 1012198, 2024396, 2530495, 5060990, 10121980]

約数ペア:

[(1, 10121980), (2, 5060990), (4, 2530495), (5, 2024396), (10, 1012198), (11, 920180), (20, 506099), (22, 460090), (44, 230045), (55, 184036), (110, 92018), (139, 72820), (220, 46009), (278, 36410), (331, 30580), (556, 18205), (662, 15290), (695, 14564), (1324, 7645), (1390, 7282), (1529, 6620), (1655, 6116), (2780, 3641), (3058, 3310)]