21031250

素因数分解:

$2^1\times 5^6\times {\mathrm{673}}^1$

素因数の和:705

約数の個数: 28

約数和(自身を含む): 39491682

約数和(自身を除く): 18460432

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 673, 1250, 1346, 3125, 3365, 6250, 6730, 15625, 16825, 31250, 33650, 84125, 168250, 420625, 841250, 2103125, 4206250, 10515625, 21031250]

約数ペア:

[(1, 21031250), (2, 10515625), (5, 4206250), (10, 2103125), (25, 841250), (50, 420625), (125, 168250), (250, 84125), (625, 33650), (673, 31250), (1250, 16825), (1346, 15625), (3125, 6730), (3365, 6250)]