64067905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1657}}^1$

素因数の和:1729

約数の個数: 32

約数和(自身を含む): 90725760

約数和(自身を除く): 26657855

約数列:

[1, 5, 11, 19, 37, 55, 95, 185, 209, 407, 703, 1045, 1657, 2035, 3515, 7733, 8285, 18227, 31483, 38665, 61309, 91135, 157415, 306545, 346313, 674399, 1164871, 1731565, 3371995, 5824355, 12813581, 64067905]

約数ペア:

[(1, 64067905), (5, 12813581), (11, 5824355), (19, 3371995), (37, 1731565), (55, 1164871), (95, 674399), (185, 346313), (209, 306545), (407, 157415), (703, 91135), (1045, 61309), (1657, 38665), (2035, 31483), (3515, 18227), (7733, 8285)]