21190430

素因数分解:

$2^1\times 5^1\times {\mathrm{887}}^1\times {\mathrm{2389}}^1$

素因数の和:3283

約数の個数: 16

約数和(自身を含む): 38201760

約数和(自身を除く): 17011330

約数列:

[1, 2, 5, 10, 887, 1774, 2389, 4435, 4778, 8870, 11945, 23890, 2119043, 4238086, 10595215, 21190430]

約数ペア:

[(1, 21190430), (2, 10595215), (5, 4238086), (10, 2119043), (887, 23890), (1774, 11945), (2389, 8870), (4435, 4778)]