19399940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{138571}}^1$

素因数の和:138587

約数の個数: 24

約数和(自身を含む): 46560192

約数和(自身を除く): 27160252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 138571, 277142, 554284, 692855, 969997, 1385710, 1939994, 2771420, 3879988, 4849985, 9699970, 19399940]

約数ペア:

[(1, 19399940), (2, 9699970), (4, 4849985), (5, 3879988), (7, 2771420), (10, 1939994), (14, 1385710), (20, 969997), (28, 692855), (35, 554284), (70, 277142), (140, 138571)]