21903908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{6287}}^1$

素因数の和:6371

約数の個数: 24

約数和(自身を含む): 41903232

約数和(自身を除く): 19999324

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 6287, 12574, 25148, 81731, 163462, 326924, 421229, 842458, 1684916, 5475977, 10951954, 21903908]

約数ペア:

[(1, 21903908), (2, 10951954), (4, 5475977), (13, 1684916), (26, 842458), (52, 421229), (67, 326924), (134, 163462), (268, 81731), (871, 25148), (1742, 12574), (3484, 6287)]