20290005

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1249}}^1$

素因数の和:1298

約数の個数: 36

約数和(自身を含む): 37147500

約数和(自身を除く): 16857495

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 361, 855, 1083, 1249, 1805, 3249, 3747, 5415, 6245, 11241, 16245, 18735, 23731, 56205, 71193, 118655, 213579, 355965, 450889, 1067895, 1352667, 2254445, 4058001, 6763335, 20290005]

約数ペア:

[(1, 20290005), (3, 6763335), (5, 4058001), (9, 2254445), (15, 1352667), (19, 1067895), (45, 450889), (57, 355965), (95, 213579), (171, 118655), (285, 71193), (361, 56205), (855, 23731), (1083, 18735), (1249, 16245), (1805, 11241), (3249, 6245), (3747, 5415)]