21670720

素因数分解:

$2^6\times 5^1\times {\mathrm{241}}^1\times {\mathrm{281}}^1$

素因数の和:539

約数の個数: 56

約数和(自身を含む): 52001928

約数和(自身を除く): 30331208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 241, 281, 320, 482, 562, 964, 1124, 1205, 1405, 1928, 2248, 2410, 2810, 3856, 4496, 4820, 5620, 7712, 8992, 9640, 11240, 15424, 17984, 19280, 22480, 38560, 44960, 67721, 77120, 89920, 135442, 270884, 338605, 541768, 677210, 1083536, 1354420, 2167072, 2708840, 4334144, 5417680, 10835360, 21670720]

約数ペア:

[(1, 21670720), (2, 10835360), (4, 5417680), (5, 4334144), (8, 2708840), (10, 2167072), (16, 1354420), (20, 1083536), (32, 677210), (40, 541768), (64, 338605), (80, 270884), (160, 135442), (241, 89920), (281, 77120), (320, 67721), (482, 44960), (562, 38560), (964, 22480), (1124, 19280), (1205, 17984), (1405, 15424), (1928, 11240), (2248, 9640), (2410, 8992), (2810, 7712), (3856, 5620), (4496, 4820)]