7998640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7691}}^1$

素因数の和:7717

約数の個数: 40

約数和(自身を含む): 20029968

約数和(自身を除く): 12031328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7691, 15382, 30764, 38455, 61528, 76910, 99983, 123056, 153820, 199966, 307640, 399932, 499915, 615280, 799864, 999830, 1599728, 1999660, 3999320, 7998640]

約数ペア:

[(1, 7998640), (2, 3999320), (4, 1999660), (5, 1599728), (8, 999830), (10, 799864), (13, 615280), (16, 499915), (20, 399932), (26, 307640), (40, 199966), (52, 153820), (65, 123056), (80, 99983), (104, 76910), (130, 61528), (208, 38455), (260, 30764), (520, 15382), (1040, 7691)]