28278640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27191}}^1$

素因数の和:27217

約数の個数: 40

約数和(自身を含む): 70807968

約数和(自身を除く): 42529328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27191, 54382, 108764, 135955, 217528, 271910, 353483, 435056, 543820, 706966, 1087640, 1413932, 1767415, 2175280, 2827864, 3534830, 5655728, 7069660, 14139320, 28278640]

約数ペア:

[(1, 28278640), (2, 14139320), (4, 7069660), (5, 5655728), (8, 3534830), (10, 2827864), (13, 2175280), (16, 1767415), (20, 1413932), (26, 1087640), (40, 706966), (52, 543820), (65, 435056), (80, 353483), (104, 271910), (130, 217528), (208, 135955), (260, 108764), (520, 54382), (1040, 27191)]