21915207

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 32707584

約数和(自身を除く): 10792377

約数列:

[1, 3, 9, 47, 103, 141, 309, 423, 503, 927, 1509, 4527, 4841, 14523, 23641, 43569, 51809, 70923, 155427, 212769, 466281, 2435023, 7305069, 21915207]

約数ペア:

[(1, 21915207), (3, 7305069), (9, 2435023), (47, 466281), (103, 212769), (141, 155427), (309, 70923), (423, 51809), (503, 43569), (927, 23641), (1509, 14523), (4527, 4841)]