28885025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 41330688

約数和(自身を除く): 12445663

約数列:

[1, 5, 13, 25, 31, 47, 61, 65, 155, 235, 305, 325, 403, 611, 775, 793, 1175, 1457, 1525, 1891, 2015, 2867, 3055, 3965, 7285, 9455, 10075, 14335, 15275, 18941, 19825, 24583, 36425, 37271, 47275, 71675, 88877, 94705, 122915, 186355, 444385, 473525, 614575, 931775, 1155401, 2221925, 5777005, 28885025]

約数ペア:

[(1, 28885025), (5, 5777005), (13, 2221925), (25, 1155401), (31, 931775), (47, 614575), (61, 473525), (65, 444385), (155, 186355), (235, 122915), (305, 94705), (325, 88877), (403, 71675), (611, 47275), (775, 37271), (793, 36425), (1175, 24583), (1457, 19825), (1525, 18941), (1891, 15275), (2015, 14335), (2867, 10075), (3055, 9455), (3965, 7285)]