81745895

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1879}}^1$

素因数の和:2015

約数の個数: 32

約数和(自身を含む): 123448320

約数和(自身を除く): 41702425

約数列:

[1, 5, 7, 11, 35, 55, 77, 113, 385, 565, 791, 1243, 1879, 3955, 6215, 8701, 9395, 13153, 20669, 43505, 65765, 103345, 144683, 212327, 723415, 1061635, 1486289, 2335597, 7431445, 11677985, 16349179, 81745895]

約数ペア:

[(1, 81745895), (5, 16349179), (7, 11677985), (11, 7431445), (35, 2335597), (55, 1486289), (77, 1061635), (113, 723415), (385, 212327), (565, 144683), (791, 103345), (1243, 65765), (1879, 43505), (3955, 20669), (6215, 13153), (8701, 9395)]