642840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 2108160

約数和(自身を除く): 1465320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 487, 660, 974, 1320, 1461, 1948, 2435, 2922, 3896, 4870, 5357, 5844, 7305, 9740, 10714, 11688, 14610, 16071, 19480, 21428, 26785, 29220, 32142, 42856, 53570, 58440, 64284, 80355, 107140, 128568, 160710, 214280, 321420, 642840]

約数ペア:

[(1, 642840), (2, 321420), (3, 214280), (4, 160710), (5, 128568), (6, 107140), (8, 80355), (10, 64284), (11, 58440), (12, 53570), (15, 42856), (20, 32142), (22, 29220), (24, 26785), (30, 21428), (33, 19480), (40, 16071), (44, 14610), (55, 11688), (60, 10714), (66, 9740), (88, 7305), (110, 5844), (120, 5357), (132, 4870), (165, 3896), (220, 2922), (264, 2435), (330, 1948), (440, 1461), (487, 1320), (660, 974)]