20474440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{881}}^1$

素因数の和:982

約数の個数: 64

約数和(自身を含む): 53343360

約数和(自身を除く): 32868920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 83, 140, 166, 280, 332, 415, 581, 664, 830, 881, 1162, 1660, 1762, 2324, 2905, 3320, 3524, 4405, 4648, 5810, 6167, 7048, 8810, 11620, 12334, 17620, 23240, 24668, 30835, 35240, 49336, 61670, 73123, 123340, 146246, 246680, 292492, 365615, 511861, 584984, 731230, 1023722, 1462460, 2047444, 2559305, 2924920, 4094888, 5118610, 10237220, 20474440]

約数ペア:

[(1, 20474440), (2, 10237220), (4, 5118610), (5, 4094888), (7, 2924920), (8, 2559305), (10, 2047444), (14, 1462460), (20, 1023722), (28, 731230), (35, 584984), (40, 511861), (56, 365615), (70, 292492), (83, 246680), (140, 146246), (166, 123340), (280, 73123), (332, 61670), (415, 49336), (581, 35240), (664, 30835), (830, 24668), (881, 23240), (1162, 17620), (1660, 12334), (1762, 11620), (2324, 8810), (2905, 7048), (3320, 6167), (3524, 5810), (4405, 4648)]