640708560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{889873}}^1$

素因数の和:889892

約数の個数: 60

約数和(自身を含む): 2151715332

約数和(自身を除く): 1511006772

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 889873, 1779746, 2669619, 3559492, 4449365, 5339238, 7118984, 8008857, 8898730, 10678476, 13348095, 14237968, 16017714, 17797460, 21356952, 26696190, 32035428, 35594920, 40044285, 42713904, 53392380, 64070856, 71189840, 80088570, 106784760, 128141712, 160177140, 213569520, 320354280, 640708560]

約数ペア:

[(1, 640708560), (2, 320354280), (3, 213569520), (4, 160177140), (5, 128141712), (6, 106784760), (8, 80088570), (9, 71189840), (10, 64070856), (12, 53392380), (15, 42713904), (16, 40044285), (18, 35594920), (20, 32035428), (24, 26696190), (30, 21356952), (36, 17797460), (40, 16017714), (45, 14237968), (48, 13348095), (60, 10678476), (72, 8898730), (80, 8008857), (90, 7118984), (120, 5339238), (144, 4449365), (180, 3559492), (240, 2669619), (360, 1779746), (720, 889873)]