20163760

素因数分解:

$2^4\times 5^1\times {\mathrm{307}}^1\times {\mathrm{821}}^1$

素因数の和:1141

約数の個数: 40

約数和(自身を含む): 47090736

約数和(自身を除く): 26926976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 307, 614, 821, 1228, 1535, 1642, 2456, 3070, 3284, 4105, 4912, 6140, 6568, 8210, 12280, 13136, 16420, 24560, 32840, 65680, 252047, 504094, 1008188, 1260235, 2016376, 2520470, 4032752, 5040940, 10081880, 20163760]

約数ペア:

[(1, 20163760), (2, 10081880), (4, 5040940), (5, 4032752), (8, 2520470), (10, 2016376), (16, 1260235), (20, 1008188), (40, 504094), (80, 252047), (307, 65680), (614, 32840), (821, 24560), (1228, 16420), (1535, 13136), (1642, 12280), (2456, 8210), (3070, 6568), (3284, 6140), (4105, 4912)]