1788891080

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{321743}}^1$

素因数の和:321893

約数の個数: 32

約数和(自身を含む): 4053974400

約数和(自身を除く): 2265083320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 321743, 643486, 1286972, 1608715, 2573944, 3217430, 6434860, 12869720, 44722277, 89444554, 178889108, 223611385, 357778216, 447222770, 894445540, 1788891080]

約数ペア:

[(1, 1788891080), (2, 894445540), (4, 447222770), (5, 357778216), (8, 223611385), (10, 178889108), (20, 89444554), (40, 44722277), (139, 12869720), (278, 6434860), (556, 3217430), (695, 2573944), (1112, 1608715), (1390, 1286972), (2780, 643486), (5560, 321743)]