61990480

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7109}}^1$

素因数の和:7231

約数の個数: 40

約数和(自身を含む): 145470600

約数和(自身を除く): 83480120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 7109, 8720, 14218, 28436, 35545, 56872, 71090, 113744, 142180, 284360, 568720, 774881, 1549762, 3099524, 3874405, 6199048, 7748810, 12398096, 15497620, 30995240, 61990480]

約数ペア:

[(1, 61990480), (2, 30995240), (4, 15497620), (5, 12398096), (8, 7748810), (10, 6199048), (16, 3874405), (20, 3099524), (40, 1549762), (80, 774881), (109, 568720), (218, 284360), (436, 142180), (545, 113744), (872, 71090), (1090, 56872), (1744, 35545), (2180, 28436), (4360, 14218), (7109, 8720)]