21243778

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{11789}}^1$

素因数の和:11861

約数の個数: 16

約数和(自身を含む): 34379640

約数和(自身を除く): 13135862

約数列:

[1, 2, 17, 34, 53, 106, 901, 1802, 11789, 23578, 200413, 400826, 624817, 1249634, 10621889, 21243778]

約数ペア:

[(1, 21243778), (2, 10621889), (17, 1249634), (34, 624817), (53, 400826), (106, 200413), (901, 23578), (1802, 11789)]