21109782

素因数分解:

$2^1\times 3^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:624

約数の個数: 32

約数和(自身を含む): 43327584

約数和(自身を除く): 22217802

約数列:

[1, 2, 3, 6, 61, 122, 137, 183, 274, 366, 411, 421, 822, 842, 1263, 2526, 8357, 16714, 25071, 25681, 50142, 51362, 57677, 77043, 115354, 154086, 173031, 346062, 3518297, 7036594, 10554891, 21109782]

約数ペア:

[(1, 21109782), (2, 10554891), (3, 7036594), (6, 3518297), (61, 346062), (122, 173031), (137, 154086), (183, 115354), (274, 77043), (366, 57677), (411, 51362), (421, 50142), (822, 25681), (842, 25071), (1263, 16714), (2526, 8357)]