397675720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{1373}}^1$

素因数の和:1954

約数の個数: 64

約数和(自身を含む): 966031920

約数和(自身を除く): 568356200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 557, 1114, 1373, 2228, 2746, 2785, 4456, 5492, 5570, 6865, 7241, 10984, 11140, 13730, 14482, 17849, 22280, 27460, 28964, 35698, 36205, 54920, 57928, 71396, 72410, 89245, 142792, 144820, 178490, 289640, 356980, 713960, 764761, 1529522, 3059044, 3823805, 6118088, 7647610, 9941893, 15295220, 19883786, 30590440, 39767572, 49709465, 79535144, 99418930, 198837860, 397675720]

約数ペア:

[(1, 397675720), (2, 198837860), (4, 99418930), (5, 79535144), (8, 49709465), (10, 39767572), (13, 30590440), (20, 19883786), (26, 15295220), (40, 9941893), (52, 7647610), (65, 6118088), (104, 3823805), (130, 3059044), (260, 1529522), (520, 764761), (557, 713960), (1114, 356980), (1373, 289640), (2228, 178490), (2746, 144820), (2785, 142792), (4456, 89245), (5492, 72410), (5570, 71396), (6865, 57928), (7241, 54920), (10984, 36205), (11140, 35698), (13730, 28964), (14482, 27460), (17849, 22280)]