64928840

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{12391}}^1$

素因数の和:12533

約数の個数: 32

約数和(自身を含む): 147216960

約数和(自身を除く): 82288120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 12391, 24782, 49564, 61955, 99128, 123910, 247820, 495640, 1623221, 3246442, 6492884, 8116105, 12985768, 16232210, 32464420, 64928840]

約数ペア:

[(1, 64928840), (2, 32464420), (4, 16232210), (5, 12985768), (8, 8116105), (10, 6492884), (20, 3246442), (40, 1623221), (131, 495640), (262, 247820), (524, 123910), (655, 99128), (1048, 61955), (1310, 49564), (2620, 24782), (5240, 12391)]