20160725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 29529360

約数和(自身を除く): 9368635

約数列:

[1, 5, 13, 17, 25, 41, 65, 85, 89, 205, 221, 325, 425, 445, 533, 697, 1025, 1105, 1157, 1513, 2225, 2665, 3485, 3649, 5525, 5785, 7565, 9061, 13325, 17425, 18245, 19669, 28925, 37825, 45305, 47437, 62033, 91225, 98345, 226525, 237185, 310165, 491725, 806429, 1185925, 1550825, 4032145, 20160725]

約数ペア:

[(1, 20160725), (5, 4032145), (13, 1550825), (17, 1185925), (25, 806429), (41, 491725), (65, 310165), (85, 237185), (89, 226525), (205, 98345), (221, 91225), (325, 62033), (425, 47437), (445, 45305), (533, 37825), (697, 28925), (1025, 19669), (1105, 18245), (1157, 17425), (1513, 13325), (2225, 9061), (2665, 7565), (3485, 5785), (3649, 5525)]