20167120

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3191}}^1$

素因数の和:3283

約数の個数: 40

約数和(自身を含む): 47496960

約数和(自身を除く): 27329840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3191, 6320, 6382, 12764, 15955, 25528, 31910, 51056, 63820, 127640, 252089, 255280, 504178, 1008356, 1260445, 2016712, 2520890, 4033424, 5041780, 10083560, 20167120]

約数ペア:

[(1, 20167120), (2, 10083560), (4, 5041780), (5, 4033424), (8, 2520890), (10, 2016712), (16, 1260445), (20, 1008356), (40, 504178), (79, 255280), (80, 252089), (158, 127640), (316, 63820), (395, 51056), (632, 31910), (790, 25528), (1264, 15955), (1580, 12764), (3160, 6382), (3191, 6320)]