20225025

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^2\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 72

約数和(自身を含む): 39684960

約数和(自身を除く): 19459935

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 83, 95, 135, 171, 225, 249, 285, 361, 415, 475, 513, 675, 747, 855, 1083, 1245, 1425, 1577, 1805, 2075, 2241, 2565, 3249, 3735, 4275, 4731, 5415, 6225, 7885, 9025, 9747, 11205, 12825, 14193, 16245, 18675, 23655, 27075, 29963, 39425, 42579, 48735, 56025, 70965, 81225, 89889, 118275, 149815, 212895, 243675, 269667, 354825, 449445, 749075, 809001, 1064475, 1348335, 2247225, 4045005, 6741675, 20225025]

約数ペア:

[(1, 20225025), (3, 6741675), (5, 4045005), (9, 2247225), (15, 1348335), (19, 1064475), (25, 809001), (27, 749075), (45, 449445), (57, 354825), (75, 269667), (83, 243675), (95, 212895), (135, 149815), (171, 118275), (225, 89889), (249, 81225), (285, 70965), (361, 56025), (415, 48735), (475, 42579), (513, 39425), (675, 29963), (747, 27075), (855, 23655), (1083, 18675), (1245, 16245), (1425, 14193), (1577, 12825), (1805, 11205), (2075, 9747), (2241, 9025), (2565, 7885), (3249, 6225), (3735, 5415), (4275, 4731)]