64470640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61991}}^1$

素因数の和:62017

約数の個数: 40

約数和(自身を含む): 161427168

約数和(自身を除く): 96956528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 61991, 123982, 247964, 309955, 495928, 619910, 805883, 991856, 1239820, 1611766, 2479640, 3223532, 4029415, 4959280, 6447064, 8058830, 12894128, 16117660, 32235320, 64470640]

約数ペア:

[(1, 64470640), (2, 32235320), (4, 16117660), (5, 12894128), (8, 8058830), (10, 6447064), (13, 4959280), (16, 4029415), (20, 3223532), (26, 2479640), (40, 1611766), (52, 1239820), (65, 991856), (80, 805883), (104, 619910), (130, 495928), (208, 309955), (260, 247964), (520, 123982), (1040, 61991)]