20702800

素因数分解:

$2^4\times 5^2\times {\mathrm{73}}^1\times {\mathrm{709}}^1$

素因数の和:800

約数の個数: 60

約数和(自身を含む): 50490940

約数和(自身を除く): 29788140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 73, 80, 100, 146, 200, 292, 365, 400, 584, 709, 730, 1168, 1418, 1460, 1825, 2836, 2920, 3545, 3650, 5672, 5840, 7090, 7300, 11344, 14180, 14600, 17725, 28360, 29200, 35450, 51757, 56720, 70900, 103514, 141800, 207028, 258785, 283600, 414056, 517570, 828112, 1035140, 1293925, 2070280, 2587850, 4140560, 5175700, 10351400, 20702800]

約数ペア:

[(1, 20702800), (2, 10351400), (4, 5175700), (5, 4140560), (8, 2587850), (10, 2070280), (16, 1293925), (20, 1035140), (25, 828112), (40, 517570), (50, 414056), (73, 283600), (80, 258785), (100, 207028), (146, 141800), (200, 103514), (292, 70900), (365, 56720), (400, 51757), (584, 35450), (709, 29200), (730, 28360), (1168, 17725), (1418, 14600), (1460, 14180), (1825, 11344), (2836, 7300), (2920, 7090), (3545, 5840), (3650, 5672)]