20170321925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{33493}}^1$

素因数の和:33642

約数の個数: 48

約数和(自身を含む): 28782064080

約数和(自身を除く): 8611742155

約数列:

[1, 5, 13, 17, 25, 65, 85, 109, 221, 325, 425, 545, 1105, 1417, 1853, 2725, 5525, 7085, 9265, 24089, 33493, 35425, 46325, 120445, 167465, 435409, 569381, 602225, 837325, 2177045, 2846905, 3650737, 7401953, 10885225, 14234525, 18253685, 37009765, 47459581, 62062529, 91268425, 185048825, 237297905, 310312645, 806812877, 1186489525, 1551563225, 4034064385, 20170321925]

約数ペア:

[(1, 20170321925), (5, 4034064385), (13, 1551563225), (17, 1186489525), (25, 806812877), (65, 310312645), (85, 237297905), (109, 185048825), (221, 91268425), (325, 62062529), (425, 47459581), (545, 37009765), (1105, 18253685), (1417, 14234525), (1853, 10885225), (2725, 7401953), (5525, 3650737), (7085, 2846905), (9265, 2177045), (24089, 837325), (33493, 602225), (35425, 569381), (46325, 435409), (120445, 167465)]