21019510

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{110629}}^1$

素因数の和:110655

約数の個数: 16

約数和(自身を含む): 39826800

約数和(自身を除く): 18807290

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 110629, 221258, 553145, 1106290, 2101951, 4203902, 10509755, 21019510]

約数ペア:

[(1, 21019510), (2, 10509755), (5, 4203902), (10, 2101951), (19, 1106290), (38, 553145), (95, 221258), (190, 110629)]