20880451660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{144983}}^1$

素因数の和:145390

約数の個数: 48

約数和(自身を含む): 46278892800

約数和(自身を除く): 25398441140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 379, 380, 758, 1516, 1895, 3790, 7201, 7580, 14402, 28804, 36005, 72010, 144020, 144983, 289966, 579932, 724915, 1449830, 2754677, 2899660, 5509354, 11018708, 13773385, 27546770, 54948557, 55093540, 109897114, 219794228, 274742785, 549485570, 1044022583, 1098971140, 2088045166, 4176090332, 5220112915, 10440225830, 20880451660]

約数ペア:

[(1, 20880451660), (2, 10440225830), (4, 5220112915), (5, 4176090332), (10, 2088045166), (19, 1098971140), (20, 1044022583), (38, 549485570), (76, 274742785), (95, 219794228), (190, 109897114), (379, 55093540), (380, 54948557), (758, 27546770), (1516, 13773385), (1895, 11018708), (3790, 5509354), (7201, 2899660), (7580, 2754677), (14402, 1449830), (28804, 724915), (36005, 579932), (72010, 289966), (144020, 144983)]