21851885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23371}}^1$

素因数の和:23404

約数の個数: 16

約数和(自身を含む): 30290112

約数和(自身を除く): 8438227

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 23371, 116855, 257081, 397307, 1285405, 1986535, 4370377, 21851885]

約数ペア:

[(1, 21851885), (5, 4370377), (11, 1986535), (17, 1285405), (55, 397307), (85, 257081), (187, 116855), (935, 23371)]