31520125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 51577344

約数和(自身を除く): 20057219

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 119, 125, 163, 175, 221, 325, 425, 455, 595, 815, 875, 1105, 1141, 1547, 1625, 2119, 2125, 2275, 2771, 2975, 4075, 5525, 5705, 7735, 10595, 11375, 13855, 14833, 14875, 19397, 20375, 27625, 28525, 36023, 38675, 52975, 69275, 74165, 96985, 142625, 180115, 193375, 252161, 264875, 346375, 370825, 484925, 900575, 1260805, 1854125, 2424625, 4502875, 6304025, 31520125]

約数ペア:

[(1, 31520125), (5, 6304025), (7, 4502875), (13, 2424625), (17, 1854125), (25, 1260805), (35, 900575), (65, 484925), (85, 370825), (91, 346375), (119, 264875), (125, 252161), (163, 193375), (175, 180115), (221, 142625), (325, 96985), (425, 74165), (455, 69275), (595, 52975), (815, 38675), (875, 36023), (1105, 28525), (1141, 27625), (1547, 20375), (1625, 19397), (2119, 14875), (2125, 14833), (2275, 13855), (2771, 11375), (2975, 10595), (4075, 7735), (5525, 5705)]