20167584880

素因数分解:

$2^4\times 5^1\times {\mathrm{3457}}^1\times {\mathrm{72923}}^1$

素因数の和:76393

約数の個数: 40

約数和(自身を含む): 46903841712

約数和(自身を除く): 26736256832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3457, 6914, 13828, 17285, 27656, 34570, 55312, 69140, 72923, 138280, 145846, 276560, 291692, 364615, 583384, 729230, 1166768, 1458460, 2916920, 5833840, 252094811, 504189622, 1008379244, 1260474055, 2016758488, 2520948110, 4033516976, 5041896220, 10083792440, 20167584880]

約数ペア:

[(1, 20167584880), (2, 10083792440), (4, 5041896220), (5, 4033516976), (8, 2520948110), (10, 2016758488), (16, 1260474055), (20, 1008379244), (40, 504189622), (80, 252094811), (3457, 5833840), (6914, 2916920), (13828, 1458460), (17285, 1166768), (27656, 729230), (34570, 583384), (55312, 364615), (69140, 291692), (72923, 276560), (138280, 145846)]