131717720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{62131}}^1$

素因数の和:62195

約数の個数: 32

約数和(自身を含む): 301961520

約数和(自身を除く): 170243800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 62131, 124262, 248524, 310655, 497048, 621310, 1242620, 2485240, 3292943, 6585886, 13171772, 16464715, 26343544, 32929430, 65858860, 131717720]

約数ペア:

[(1, 131717720), (2, 65858860), (4, 32929430), (5, 26343544), (8, 16464715), (10, 13171772), (20, 6585886), (40, 3292943), (53, 2485240), (106, 1242620), (212, 621310), (265, 497048), (424, 310655), (530, 248524), (1060, 124262), (2120, 62131)]