20228775

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{727}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 18768729

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 53, 75, 105, 159, 175, 265, 371, 525, 727, 795, 1113, 1325, 1855, 2181, 3635, 3975, 5089, 5565, 9275, 10905, 15267, 18175, 25445, 27825, 38531, 54525, 76335, 115593, 127225, 192655, 269717, 381675, 577965, 809151, 963275, 1348585, 2889825, 4045755, 6742925, 20228775]

約数ペア:

[(1, 20228775), (3, 6742925), (5, 4045755), (7, 2889825), (15, 1348585), (21, 963275), (25, 809151), (35, 577965), (53, 381675), (75, 269717), (105, 192655), (159, 127225), (175, 115593), (265, 76335), (371, 54525), (525, 38531), (727, 27825), (795, 25445), (1113, 18175), (1325, 15267), (1855, 10905), (2181, 9275), (3635, 5565), (3975, 5089)]