18677945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{173}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 26659584

約数和(自身を除く): 7981639

約数列:

[1, 5, 11, 13, 55, 65, 143, 151, 173, 715, 755, 865, 1661, 1903, 1963, 2249, 8305, 9515, 9815, 11245, 21593, 24739, 26123, 107965, 123695, 130615, 287353, 339599, 1436765, 1697995, 3735589, 18677945]

約数ペア:

[(1, 18677945), (5, 3735589), (11, 1697995), (13, 1436765), (55, 339599), (65, 287353), (143, 130615), (151, 123695), (173, 107965), (715, 26123), (755, 24739), (865, 21593), (1661, 11245), (1903, 9815), (1963, 9515), (2249, 8305)]