21118890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54151}}^1$

素因数の和:54174

約数の個数: 32

約数和(自身を含む): 54585216

約数和(自身を除く): 33466326

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54151, 108302, 162453, 270755, 324906, 541510, 703963, 812265, 1407926, 1624530, 2111889, 3519815, 4223778, 7039630, 10559445, 21118890]

約数ペア:

[(1, 21118890), (2, 10559445), (3, 7039630), (5, 4223778), (6, 3519815), (10, 2111889), (13, 1624530), (15, 1407926), (26, 812265), (30, 703963), (39, 541510), (65, 324906), (78, 270755), (130, 162453), (195, 108302), (390, 54151)]