64303280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11321}}^1$

素因数の和:11405

約数の個数: 40

約数和(自身を含む): 151624224

約数和(自身を除く): 87320944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 11321, 22642, 45284, 56605, 90568, 113210, 181136, 226420, 452840, 803791, 905680, 1607582, 3215164, 4018955, 6430328, 8037910, 12860656, 16075820, 32151640, 64303280]

約数ペア:

[(1, 64303280), (2, 32151640), (4, 16075820), (5, 12860656), (8, 8037910), (10, 6430328), (16, 4018955), (20, 3215164), (40, 1607582), (71, 905680), (80, 803791), (142, 452840), (284, 226420), (355, 181136), (568, 113210), (710, 90568), (1136, 56605), (1420, 45284), (2840, 22642), (5680, 11321)]