20672475

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 36604800

約数和(自身を除く): 15932325

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 89, 95, 163, 267, 285, 445, 475, 489, 815, 1335, 1425, 1691, 2225, 2445, 3097, 4075, 5073, 6675, 8455, 9291, 12225, 14507, 15485, 25365, 42275, 43521, 46455, 72535, 77425, 126825, 217605, 232275, 275633, 362675, 826899, 1088025, 1378165, 4134495, 6890825, 20672475]

約数ペア:

[(1, 20672475), (3, 6890825), (5, 4134495), (15, 1378165), (19, 1088025), (25, 826899), (57, 362675), (75, 275633), (89, 232275), (95, 217605), (163, 126825), (267, 77425), (285, 72535), (445, 46455), (475, 43521), (489, 42275), (815, 25365), (1335, 15485), (1425, 14507), (1691, 12225), (2225, 9291), (2445, 8455), (3097, 6675), (4075, 5073)]