1280457800

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{63389}}^1$

素因数の和:63506

約数の個数: 48

約数和(自身を含む): 3006587700

約数和(自身を除く): 1726129900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 2020, 2525, 4040, 5050, 10100, 20200, 63389, 126778, 253556, 316945, 507112, 633890, 1267780, 1584725, 2535560, 3169450, 6338900, 6402289, 12677800, 12804578, 25609156, 32011445, 51218312, 64022890, 128045780, 160057225, 256091560, 320114450, 640228900, 1280457800]

約数ペア:

[(1, 1280457800), (2, 640228900), (4, 320114450), (5, 256091560), (8, 160057225), (10, 128045780), (20, 64022890), (25, 51218312), (40, 32011445), (50, 25609156), (100, 12804578), (101, 12677800), (200, 6402289), (202, 6338900), (404, 3169450), (505, 2535560), (808, 1584725), (1010, 1267780), (2020, 633890), (2525, 507112), (4040, 316945), (5050, 253556), (10100, 126778), (20200, 63389)]