728311025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2161}}^1$

素因数の和:2262

約数の個数: 48

約数和(自身を含む): 1047151728

約数和(自身を除く): 318840703

約数列:

[1, 5, 13, 17, 25, 61, 65, 85, 221, 305, 325, 425, 793, 1037, 1105, 1525, 2161, 3965, 5185, 5525, 10805, 13481, 19825, 25925, 28093, 36737, 54025, 67405, 131821, 140465, 183685, 337025, 477581, 659105, 702325, 918425, 1713673, 2240957, 2387905, 3295525, 8568365, 11204785, 11939525, 29132441, 42841825, 56023925, 145662205, 728311025]

約数ペア:

[(1, 728311025), (5, 145662205), (13, 56023925), (17, 42841825), (25, 29132441), (61, 11939525), (65, 11204785), (85, 8568365), (221, 3295525), (305, 2387905), (325, 2240957), (425, 1713673), (793, 918425), (1037, 702325), (1105, 659105), (1525, 477581), (2161, 337025), (3965, 183685), (5185, 140465), (5525, 131821), (10805, 67405), (13481, 54025), (19825, 36737), (25925, 28093)]