21383090

素因数分解:

$2^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{4201}}^1$

素因数の和:4717

約数の個数: 16

約数和(自身を含む): 38574360

約数和(自身を除く): 17191270

約数列:

[1, 2, 5, 10, 509, 1018, 2545, 4201, 5090, 8402, 21005, 42010, 2138309, 4276618, 10691545, 21383090]

約数ペア:

[(1, 21383090), (2, 10691545), (5, 4276618), (10, 2138309), (509, 42010), (1018, 21005), (2545, 8402), (4201, 5090)]