17880005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1471}}^1$

素因数の和:1517

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 8827963

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 1471, 2431, 7355, 12155, 16181, 19123, 25007, 80905, 95615, 125035, 210353, 275077, 325091, 1051765, 1375385, 1625455, 3576001, 17880005]

約数ペア:

[(1, 17880005), (5, 3576001), (11, 1625455), (13, 1375385), (17, 1051765), (55, 325091), (65, 275077), (85, 210353), (143, 125035), (187, 95615), (221, 80905), (715, 25007), (935, 19123), (1105, 16181), (1471, 12155), (2431, 7355)]