80942800

素因数分解:

$2^4\times 5^2\times {\mathrm{202357}}^1$

素因数の和:202375

約数の個数: 30

約数和(自身を含む): 194466038

約数和(自身を除く): 113523238

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202357, 404714, 809428, 1011785, 1618856, 2023570, 3237712, 4047140, 5058925, 8094280, 10117850, 16188560, 20235700, 40471400, 80942800]

約数ペア:

[(1, 80942800), (2, 40471400), (4, 20235700), (5, 16188560), (8, 10117850), (10, 8094280), (16, 5058925), (20, 4047140), (25, 3237712), (40, 2023570), (50, 1618856), (80, 1011785), (100, 809428), (200, 404714), (400, 202357)]