20467000

素因数分解:

$2^3\times 5^3\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:329

約数の個数: 64

約数和(自身を含む): 48615840

約数和(自身を除く): 28148840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 125, 194, 200, 211, 250, 388, 422, 485, 500, 776, 844, 970, 1000, 1055, 1688, 1940, 2110, 2425, 3880, 4220, 4850, 5275, 8440, 9700, 10550, 12125, 19400, 20467, 21100, 24250, 26375, 40934, 42200, 48500, 52750, 81868, 97000, 102335, 105500, 163736, 204670, 211000, 409340, 511675, 818680, 1023350, 2046700, 2558375, 4093400, 5116750, 10233500, 20467000]

約数ペア:

[(1, 20467000), (2, 10233500), (4, 5116750), (5, 4093400), (8, 2558375), (10, 2046700), (20, 1023350), (25, 818680), (40, 511675), (50, 409340), (97, 211000), (100, 204670), (125, 163736), (194, 105500), (200, 102335), (211, 97000), (250, 81868), (388, 52750), (422, 48500), (485, 42200), (500, 40934), (776, 26375), (844, 24250), (970, 21100), (1000, 20467), (1055, 19400), (1688, 12125), (1940, 10550), (2110, 9700), (2425, 8440), (3880, 5275), (4220, 4850)]