19521980

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6551}}^1$

素因数の和:6709

約数の個数: 24

約数和(自身を含む): 41277600

約数和(自身を除く): 21755620

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6551, 13102, 26204, 32755, 65510, 131020, 976099, 1952198, 3904396, 4880495, 9760990, 19521980]

約数ペア:

[(1, 19521980), (2, 9760990), (4, 4880495), (5, 3904396), (10, 1952198), (20, 976099), (149, 131020), (298, 65510), (596, 32755), (745, 26204), (1490, 13102), (2980, 6551)]