20207920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6827}}^1$

素因数の和:6877

約数の個数: 40

約数和(自身を含む): 48260304

約数和(自身を除く): 28052384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6827, 13654, 27308, 34135, 54616, 68270, 109232, 136540, 252599, 273080, 505198, 546160, 1010396, 1262995, 2020792, 2525990, 4041584, 5051980, 10103960, 20207920]

約数ペア:

[(1, 20207920), (2, 10103960), (4, 5051980), (5, 4041584), (8, 2525990), (10, 2020792), (16, 1262995), (20, 1010396), (37, 546160), (40, 505198), (74, 273080), (80, 252599), (148, 136540), (185, 109232), (296, 68270), (370, 54616), (592, 34135), (740, 27308), (1480, 13654), (2960, 6827)]