21530075

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7237}}^1$

素因数の和:7271

約数の個数: 24

約数和(自身を含む): 32310432

約数和(自身を除く): 10780357

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 7237, 36185, 50659, 123029, 180925, 253295, 615145, 861203, 1266475, 3075725, 4306015, 21530075]

約数ペア:

[(1, 21530075), (5, 4306015), (7, 3075725), (17, 1266475), (25, 861203), (35, 615145), (85, 253295), (119, 180925), (175, 123029), (425, 50659), (595, 36185), (2975, 7237)]