25240455

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 47005920

約数和(自身を除く): 21765465

約数列:

[1, 3, 5, 9, 15, 19, 45, 53, 57, 95, 159, 171, 265, 285, 477, 557, 795, 855, 1007, 1671, 2385, 2785, 3021, 5013, 5035, 8355, 9063, 10583, 15105, 25065, 29521, 31749, 45315, 52915, 88563, 95247, 147605, 158745, 265689, 442815, 476235, 560899, 1328445, 1682697, 2804495, 5048091, 8413485, 25240455]

約数ペア:

[(1, 25240455), (3, 8413485), (5, 5048091), (9, 2804495), (15, 1682697), (19, 1328445), (45, 560899), (53, 476235), (57, 442815), (95, 265689), (159, 158745), (171, 147605), (265, 95247), (285, 88563), (477, 52915), (557, 45315), (795, 31749), (855, 29521), (1007, 25065), (1671, 15105), (2385, 10583), (2785, 9063), (3021, 8355), (5013, 5035)]