64625020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{1487}}^1$

素因数の和:1590

約数の個数: 48

約数和(自身を含む): 141740928

約数和(自身を除く): 77115908

約数列:

[1, 2, 4, 5, 10, 20, 41, 53, 82, 106, 164, 205, 212, 265, 410, 530, 820, 1060, 1487, 2173, 2974, 4346, 5948, 7435, 8692, 10865, 14870, 21730, 29740, 43460, 60967, 78811, 121934, 157622, 243868, 304835, 315244, 394055, 609670, 788110, 1219340, 1576220, 3231251, 6462502, 12925004, 16156255, 32312510, 64625020]

約数ペア:

[(1, 64625020), (2, 32312510), (4, 16156255), (5, 12925004), (10, 6462502), (20, 3231251), (41, 1576220), (53, 1219340), (82, 788110), (106, 609670), (164, 394055), (205, 315244), (212, 304835), (265, 243868), (410, 157622), (530, 121934), (820, 78811), (1060, 60967), (1487, 43460), (2173, 29740), (2974, 21730), (4346, 14870), (5948, 10865), (7435, 8692)]