78896740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15971}}^1$

素因数の和:16012

約数の個数: 48

約数和(自身を含む): 187830720

約数和(自身を除く): 108933980

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 15971, 31942, 63884, 79855, 159710, 207623, 303449, 319420, 415246, 606898, 830492, 1038115, 1213796, 1517245, 2076230, 3034490, 3944837, 4152460, 6068980, 7889674, 15779348, 19724185, 39448370, 78896740]

約数ペア:

[(1, 78896740), (2, 39448370), (4, 19724185), (5, 15779348), (10, 7889674), (13, 6068980), (19, 4152460), (20, 3944837), (26, 3034490), (38, 2076230), (52, 1517245), (65, 1213796), (76, 1038115), (95, 830492), (130, 606898), (190, 415246), (247, 319420), (260, 303449), (380, 207623), (494, 159710), (988, 79855), (1235, 63884), (2470, 31942), (4940, 15971)]