21166312

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{313}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 40694400

約数和(自身を除く): 19528088

約数列:

[1, 2, 4, 8, 79, 107, 158, 214, 313, 316, 428, 626, 632, 856, 1252, 2504, 8453, 16906, 24727, 33491, 33812, 49454, 66982, 67624, 98908, 133964, 197816, 267928, 2645789, 5291578, 10583156, 21166312]

約数ペア:

[(1, 21166312), (2, 10583156), (4, 5291578), (8, 2645789), (79, 267928), (107, 197816), (158, 133964), (214, 98908), (313, 67624), (316, 66982), (428, 49454), (626, 33812), (632, 33491), (856, 24727), (1252, 16906), (2504, 8453)]