19408220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4391}}^1$

素因数の和:4430

約数の個数: 48

約数和(自身を含む): 46484928

約数和(自身を除く): 27076708

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4391, 4420, 8782, 17564, 21955, 43910, 57083, 74647, 87820, 114166, 149294, 228332, 285415, 298588, 373235, 570830, 746470, 970411, 1141660, 1492940, 1940822, 3881644, 4852055, 9704110, 19408220]

約数ペア:

[(1, 19408220), (2, 9704110), (4, 4852055), (5, 3881644), (10, 1940822), (13, 1492940), (17, 1141660), (20, 970411), (26, 746470), (34, 570830), (52, 373235), (65, 298588), (68, 285415), (85, 228332), (130, 149294), (170, 114166), (221, 87820), (260, 74647), (340, 57083), (442, 43910), (884, 21955), (1105, 17564), (2210, 8782), (4391, 4420)]