21214045

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 27652104

約数和(自身を除く): 6438059

約数列:

[1, 5, 17, 53, 85, 265, 277, 289, 901, 1385, 1445, 4505, 4709, 14681, 15317, 23545, 73405, 76585, 80053, 249577, 400265, 1247885, 4242809, 21214045]

約数ペア:

[(1, 21214045), (5, 4242809), (17, 1247885), (53, 400265), (85, 249577), (265, 80053), (277, 76585), (289, 73405), (901, 23545), (1385, 15317), (1445, 14681), (4505, 4709)]