221777560

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 508032000

約数和(自身を除く): 286254440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 149, 254, 293, 298, 508, 586, 596, 635, 745, 1016, 1172, 1192, 1270, 1465, 1490, 2344, 2540, 2930, 2980, 5080, 5860, 5960, 11720, 18923, 37211, 37846, 43657, 74422, 75692, 87314, 94615, 148844, 151384, 174628, 186055, 189230, 218285, 297688, 349256, 372110, 378460, 436570, 744220, 756920, 873140, 1488440, 1746280, 5544439, 11088878, 22177756, 27722195, 44355512, 55444390, 110888780, 221777560]

約数ペア:

[(1, 221777560), (2, 110888780), (4, 55444390), (5, 44355512), (8, 27722195), (10, 22177756), (20, 11088878), (40, 5544439), (127, 1746280), (149, 1488440), (254, 873140), (293, 756920), (298, 744220), (508, 436570), (586, 378460), (596, 372110), (635, 349256), (745, 297688), (1016, 218285), (1172, 189230), (1192, 186055), (1270, 174628), (1465, 151384), (1490, 148844), (2344, 94615), (2540, 87314), (2930, 75692), (2980, 74422), (5080, 43657), (5860, 37846), (5960, 37211), (11720, 18923)]