21292075

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{421}}^1$

素因数の和:472

約数の個数: 36

約数和(自身を含む): 32129392

約数和(自身を除く): 10837317

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 289, 421, 425, 595, 1445, 2023, 2105, 2947, 2975, 7157, 7225, 10115, 10525, 14735, 35785, 50099, 50575, 73675, 121669, 178925, 250495, 608345, 851683, 1252475, 3041725, 4258415, 21292075]

約数ペア:

[(1, 21292075), (5, 4258415), (7, 3041725), (17, 1252475), (25, 851683), (35, 608345), (85, 250495), (119, 178925), (175, 121669), (289, 73675), (421, 50575), (425, 50099), (595, 35785), (1445, 14735), (2023, 10525), (2105, 10115), (2947, 7225), (2975, 7157)]