18974120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1487}}^1$

素因数の和:1538

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 29237080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1487, 1595, 2552, 2974, 3190, 5948, 6380, 7435, 11896, 12760, 14870, 16357, 29740, 32714, 43123, 59480, 65428, 81785, 86246, 130856, 163570, 172492, 215615, 327140, 344984, 431230, 474353, 654280, 862460, 948706, 1724920, 1897412, 2371765, 3794824, 4743530, 9487060, 18974120]

約数ペア:

[(1, 18974120), (2, 9487060), (4, 4743530), (5, 3794824), (8, 2371765), (10, 1897412), (11, 1724920), (20, 948706), (22, 862460), (29, 654280), (40, 474353), (44, 431230), (55, 344984), (58, 327140), (88, 215615), (110, 172492), (116, 163570), (145, 130856), (220, 86246), (232, 81785), (290, 65428), (319, 59480), (440, 43123), (580, 32714), (638, 29740), (1160, 16357), (1276, 14870), (1487, 12760), (1595, 11896), (2552, 7435), (2974, 6380), (3190, 5948)]