2001978640

素因数分解:

$2^4\times 5^1\times {\mathrm{2971}}^1\times {\mathrm{8423}}^1$

素因数の和:11407

約数の個数: 40

約数和(自身を含む): 4656719808

約数和(自身を除く): 2654741168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2971, 5942, 8423, 11884, 14855, 16846, 23768, 29710, 33692, 42115, 47536, 59420, 67384, 84230, 118840, 134768, 168460, 237680, 336920, 673840, 25024733, 50049466, 100098932, 125123665, 200197864, 250247330, 400395728, 500494660, 1000989320, 2001978640]

約数ペア:

[(1, 2001978640), (2, 1000989320), (4, 500494660), (5, 400395728), (8, 250247330), (10, 200197864), (16, 125123665), (20, 100098932), (40, 50049466), (80, 25024733), (2971, 673840), (5942, 336920), (8423, 237680), (11884, 168460), (14855, 134768), (16846, 118840), (23768, 84230), (29710, 67384), (33692, 59420), (42115, 47536)]