402019960

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{39107}}^1$

素因数の和:39375

約数の個数: 32

約数和(自身を含む): 908087760

約数和(自身を除く): 506067800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 39107, 78214, 156428, 195535, 312856, 391070, 782140, 1564280, 10050499, 20100998, 40201996, 50252495, 80403992, 100504990, 201009980, 402019960]

約数ペア:

[(1, 402019960), (2, 201009980), (4, 100504990), (5, 80403992), (8, 50252495), (10, 40201996), (20, 20100998), (40, 10050499), (257, 1564280), (514, 782140), (1028, 391070), (1285, 312856), (2056, 195535), (2570, 156428), (5140, 78214), (10280, 39107)]