20038275

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 38591280

約数和(自身を除く): 18553005

約数列:

[1, 3, 5, 9, 15, 25, 29, 37, 45, 75, 83, 87, 111, 145, 185, 225, 249, 261, 333, 415, 435, 555, 725, 747, 925, 1073, 1245, 1305, 1665, 2075, 2175, 2407, 2775, 3071, 3219, 3735, 5365, 6225, 6525, 7221, 8325, 9213, 9657, 12035, 15355, 16095, 18675, 21663, 26825, 27639, 36105, 46065, 48285, 60175, 76775, 80475, 89059, 108315, 138195, 180525, 230325, 241425, 267177, 445295, 541575, 690975, 801531, 1335885, 2226475, 4007655, 6679425, 20038275]

約数ペア:

[(1, 20038275), (3, 6679425), (5, 4007655), (9, 2226475), (15, 1335885), (25, 801531), (29, 690975), (37, 541575), (45, 445295), (75, 267177), (83, 241425), (87, 230325), (111, 180525), (145, 138195), (185, 108315), (225, 89059), (249, 80475), (261, 76775), (333, 60175), (415, 48285), (435, 46065), (555, 36105), (725, 27639), (747, 26825), (925, 21663), (1073, 18675), (1245, 16095), (1305, 15355), (1665, 12035), (2075, 9657), (2175, 9213), (2407, 8325), (2775, 7221), (3071, 6525), (3219, 6225), (3735, 5365)]