31392440

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1213}}^1$

素因数の和:1871

約数の個数: 32

約数和(自身を含む): 70800480

約数和(自身を除く): 39408040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1213, 1294, 2426, 2588, 3235, 4852, 5176, 6065, 6470, 9704, 12130, 12940, 24260, 25880, 48520, 784811, 1569622, 3139244, 3924055, 6278488, 7848110, 15696220, 31392440]

約数ペア:

[(1, 31392440), (2, 15696220), (4, 7848110), (5, 6278488), (8, 3924055), (10, 3139244), (20, 1569622), (40, 784811), (647, 48520), (1213, 25880), (1294, 24260), (2426, 12940), (2588, 12130), (3235, 9704), (4852, 6470), (5176, 6065)]