20513968

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1423}}^1$

素因数の和:1501

約数の個数: 40

約数和(自身を含む): 42907968

約数和(自身を除く): 22394000

約数列:

[1, 2, 4, 8, 16, 17, 34, 53, 68, 106, 136, 212, 272, 424, 848, 901, 1423, 1802, 2846, 3604, 5692, 7208, 11384, 14416, 22768, 24191, 48382, 75419, 96764, 150838, 193528, 301676, 387056, 603352, 1206704, 1282123, 2564246, 5128492, 10256984, 20513968]

約数ペア:

[(1, 20513968), (2, 10256984), (4, 5128492), (8, 2564246), (16, 1282123), (17, 1206704), (34, 603352), (53, 387056), (68, 301676), (106, 193528), (136, 150838), (212, 96764), (272, 75419), (424, 48382), (848, 24191), (901, 22768), (1423, 14416), (1802, 11384), (2846, 7208), (3604, 5692)]