1989820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 4874688

約数和(自身を除く): 2884868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 233, 244, 305, 427, 466, 610, 854, 932, 1165, 1220, 1631, 1708, 2135, 2330, 3262, 4270, 4660, 6524, 8155, 8540, 14213, 16310, 28426, 32620, 56852, 71065, 99491, 142130, 198982, 284260, 397964, 497455, 994910, 1989820]

約数ペア:

[(1, 1989820), (2, 994910), (4, 497455), (5, 397964), (7, 284260), (10, 198982), (14, 142130), (20, 99491), (28, 71065), (35, 56852), (61, 32620), (70, 28426), (122, 16310), (140, 14213), (233, 8540), (244, 8155), (305, 6524), (427, 4660), (466, 4270), (610, 3262), (854, 2330), (932, 2135), (1165, 1708), (1220, 1631)]