156561925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{659}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 226860480

約数和(自身を除く): 70298555

約数列:

[1, 5, 13, 17, 25, 43, 65, 85, 215, 221, 325, 425, 559, 659, 731, 1075, 1105, 2795, 3295, 3655, 5525, 8567, 9503, 11203, 13975, 16475, 18275, 28337, 42835, 47515, 56015, 141685, 145639, 214175, 237575, 280075, 368381, 481729, 708425, 728195, 1841905, 2408645, 3640975, 6262477, 9209525, 12043225, 31312385, 156561925]

約数ペア:

[(1, 156561925), (5, 31312385), (13, 12043225), (17, 9209525), (25, 6262477), (43, 3640975), (65, 2408645), (85, 1841905), (215, 728195), (221, 708425), (325, 481729), (425, 368381), (559, 280075), (659, 237575), (731, 214175), (1075, 145639), (1105, 141685), (2795, 56015), (3295, 47515), (3655, 42835), (5525, 28337), (8567, 18275), (9503, 16475), (11203, 13975)]