388792400

素因数分解:

$2^4\times 5^2\times {\mathrm{971981}}^1$

素因数の和:971999

約数の個数: 30

約数和(自身を含む): 934074702

約数和(自身を除く): 545282302

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 971981, 1943962, 3887924, 4859905, 7775848, 9719810, 15551696, 19439620, 24299525, 38879240, 48599050, 77758480, 97198100, 194396200, 388792400]

約数ペア:

[(1, 388792400), (2, 194396200), (4, 97198100), (5, 77758480), (8, 48599050), (10, 38879240), (16, 24299525), (20, 19439620), (25, 15551696), (40, 9719810), (50, 7775848), (80, 4859905), (100, 3887924), (200, 1943962), (400, 971981)]