18978664

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2633}}^1$

素因数の和:2709

約数の個数: 32

約数和(自身を含む): 38403720

約数和(自身を除く): 19425056

約数列:

[1, 2, 4, 8, 17, 34, 53, 68, 106, 136, 212, 424, 901, 1802, 2633, 3604, 5266, 7208, 10532, 21064, 44761, 89522, 139549, 179044, 279098, 358088, 558196, 1116392, 2372333, 4744666, 9489332, 18978664]

約数ペア:

[(1, 18978664), (2, 9489332), (4, 4744666), (8, 2372333), (17, 1116392), (34, 558196), (53, 358088), (68, 279098), (106, 179044), (136, 139549), (212, 89522), (424, 44761), (901, 21064), (1802, 10532), (2633, 7208), (3604, 5266)]