20410780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2707}}^1$

素因数の和:2758

約数の個数: 48

約数和(自身を含む): 47769120

約数和(自身を除く): 27358340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2707, 3770, 5414, 7540, 10828, 13535, 27070, 35191, 54140, 70382, 78503, 140764, 157006, 175955, 314012, 351910, 392515, 703820, 785030, 1020539, 1570060, 2041078, 4082156, 5102695, 10205390, 20410780]

約数ペア:

[(1, 20410780), (2, 10205390), (4, 5102695), (5, 4082156), (10, 2041078), (13, 1570060), (20, 1020539), (26, 785030), (29, 703820), (52, 392515), (58, 351910), (65, 314012), (116, 175955), (130, 157006), (145, 140764), (260, 78503), (290, 70382), (377, 54140), (580, 35191), (754, 27070), (1508, 13535), (1885, 10828), (2707, 7540), (3770, 5414)]