31809805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 43110144

約数和(自身を除く): 11300339

約数列:

[1, 5, 17, 23, 53, 85, 115, 265, 307, 391, 901, 1219, 1535, 1955, 4505, 5219, 6095, 7061, 16271, 20723, 26095, 35305, 81355, 103615, 120037, 276607, 374233, 600185, 1383035, 1871165, 6361961, 31809805]

約数ペア:

[(1, 31809805), (5, 6361961), (17, 1871165), (23, 1383035), (53, 600185), (85, 374233), (115, 276607), (265, 120037), (307, 103615), (391, 81355), (901, 35305), (1219, 26095), (1535, 20723), (1955, 16271), (4505, 7061), (5219, 6095)]