64335440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61861}}^1$

素因数の和:61887

約数の個数: 40

約数和(自身を含む): 161088648

約数和(自身を除く): 96753208

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 61861, 123722, 247444, 309305, 494888, 618610, 804193, 989776, 1237220, 1608386, 2474440, 3216772, 4020965, 4948880, 6433544, 8041930, 12867088, 16083860, 32167720, 64335440]

約数ペア:

[(1, 64335440), (2, 32167720), (4, 16083860), (5, 12867088), (8, 8041930), (10, 6433544), (13, 4948880), (16, 4020965), (20, 3216772), (26, 2474440), (40, 1608386), (52, 1237220), (65, 989776), (80, 804193), (104, 618610), (130, 494888), (208, 309305), (260, 247444), (520, 123722), (1040, 61861)]