20945740420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{684949}}^1$

素因数の和:685108

約数の個数: 48

約数和(自身を含む): 48330072000

約数和(自身を除く): 27384331580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 695, 1390, 1529, 2780, 3058, 6116, 7645, 15290, 30580, 684949, 1369898, 2739796, 3424745, 6849490, 7534439, 13698980, 15068878, 30137756, 37672195, 75344390, 95207911, 150688780, 190415822, 380831644, 476039555, 952079110, 1047287021, 1904158220, 2094574042, 4189148084, 5236435105, 10472870210, 20945740420]

約数ペア:

[(1, 20945740420), (2, 10472870210), (4, 5236435105), (5, 4189148084), (10, 2094574042), (11, 1904158220), (20, 1047287021), (22, 952079110), (44, 476039555), (55, 380831644), (110, 190415822), (139, 150688780), (220, 95207911), (278, 75344390), (556, 37672195), (695, 30137756), (1390, 15068878), (1529, 13698980), (2780, 7534439), (3058, 6849490), (6116, 3424745), (7645, 2739796), (15290, 1369898), (30580, 684949)]