80815025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 112492800

約数和(自身を除く): 31677775

約数列:

[1, 5, 17, 25, 29, 79, 83, 85, 145, 395, 415, 425, 493, 725, 1343, 1411, 1975, 2075, 2291, 2407, 2465, 6557, 6715, 7055, 11455, 12035, 12325, 32785, 33575, 35275, 38947, 40919, 57275, 60175, 111469, 163925, 190153, 194735, 204595, 557345, 950765, 973675, 1022975, 2786725, 3232601, 4753825, 16163005, 80815025]

約数ペア:

[(1, 80815025), (5, 16163005), (17, 4753825), (25, 3232601), (29, 2786725), (79, 1022975), (83, 973675), (85, 950765), (145, 557345), (395, 204595), (415, 194735), (425, 190153), (493, 163925), (725, 111469), (1343, 60175), (1411, 57275), (1975, 40919), (2075, 38947), (2291, 35275), (2407, 33575), (2465, 32785), (6557, 12325), (6715, 12035), (7055, 11455)]