20855890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{189599}}^1$

素因数の和:189617

約数の個数: 16

約数和(自身を含む): 40953600

約数和(自身を除く): 20097710

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 189599, 379198, 947995, 1895990, 2085589, 4171178, 10427945, 20855890]

約数ペア:

[(1, 20855890), (2, 10427945), (5, 4171178), (10, 2085589), (11, 1895990), (22, 947995), (55, 379198), (110, 189599)]