20163391025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{50311}}^1$

素因数の和:50402

約数の個数: 48

約数和(自身を含む): 28298688768

約数和(自身を除く): 8135297743

約数列:

[1, 5, 17, 23, 25, 41, 85, 115, 205, 391, 425, 575, 697, 943, 1025, 1955, 3485, 4715, 9775, 16031, 17425, 23575, 50311, 80155, 251555, 400775, 855287, 1157153, 1257775, 2062751, 4276435, 5785765, 10313755, 19671601, 21382175, 28928825, 35066767, 47443273, 51568775, 98358005, 175333835, 237216365, 491790025, 806535641, 876669175, 1186081825, 4032678205, 20163391025]

約数ペア:

[(1, 20163391025), (5, 4032678205), (17, 1186081825), (23, 876669175), (25, 806535641), (41, 491790025), (85, 237216365), (115, 175333835), (205, 98358005), (391, 51568775), (425, 47443273), (575, 35066767), (697, 28928825), (943, 21382175), (1025, 19671601), (1955, 10313755), (3485, 5785765), (4715, 4276435), (9775, 2062751), (16031, 1257775), (17425, 1157153), (23575, 855287), (50311, 400775), (80155, 251555)]