1561400

素因数分解:

$2^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 3746040

約数和(自身を除く): 2184640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 148, 185, 200, 211, 296, 370, 422, 740, 844, 925, 1055, 1480, 1688, 1850, 2110, 3700, 4220, 5275, 7400, 7807, 8440, 10550, 15614, 21100, 31228, 39035, 42200, 62456, 78070, 156140, 195175, 312280, 390350, 780700, 1561400]

約数ペア:

[(1, 1561400), (2, 780700), (4, 390350), (5, 312280), (8, 195175), (10, 156140), (20, 78070), (25, 62456), (37, 42200), (40, 39035), (50, 31228), (74, 21100), (100, 15614), (148, 10550), (185, 8440), (200, 7807), (211, 7400), (296, 5275), (370, 4220), (422, 3700), (740, 2110), (844, 1850), (925, 1688), (1055, 1480)]