21505952

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3041}}^1$

素因数の和:3081

約数の個数: 48

約数和(自身を含む): 48294792

約数和(自身を除く): 26788840

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 416, 442, 544, 884, 1768, 3041, 3536, 6082, 7072, 12164, 24328, 39533, 48656, 51697, 79066, 97312, 103394, 158132, 206788, 316264, 413576, 632528, 672061, 827152, 1265056, 1344122, 1654304, 2688244, 5376488, 10752976, 21505952]

約数ペア:

[(1, 21505952), (2, 10752976), (4, 5376488), (8, 2688244), (13, 1654304), (16, 1344122), (17, 1265056), (26, 827152), (32, 672061), (34, 632528), (52, 413576), (68, 316264), (104, 206788), (136, 158132), (208, 103394), (221, 97312), (272, 79066), (416, 51697), (442, 48656), (544, 39533), (884, 24328), (1768, 12164), (3041, 7072), (3536, 6082)]