20218835

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1201}}^1$

素因数の和:1263

約数の個数: 32

約数和(自身を含む): 30694272

約数和(自身を除く): 10475437

約数列:

[1, 5, 7, 13, 35, 37, 65, 91, 185, 259, 455, 481, 1201, 1295, 2405, 3367, 6005, 8407, 15613, 16835, 42035, 44437, 78065, 109291, 222185, 311059, 546455, 577681, 1555295, 2888405, 4043767, 20218835]

約数ペア:

[(1, 20218835), (5, 4043767), (7, 2888405), (13, 1555295), (35, 577681), (37, 546455), (65, 311059), (91, 222185), (185, 109291), (259, 78065), (455, 44437), (481, 42035), (1201, 16835), (1295, 15613), (2405, 8407), (3367, 6005)]