20921800

素因数分解:

$2^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1433}}^1$

素因数の和:1522

約数の個数: 48

約数和(自身を含む): 49343940

約数和(自身を除く): 28422140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 73, 100, 146, 200, 292, 365, 584, 730, 1433, 1460, 1825, 2866, 2920, 3650, 5732, 7165, 7300, 11464, 14330, 14600, 28660, 35825, 57320, 71650, 104609, 143300, 209218, 286600, 418436, 523045, 836872, 1046090, 2092180, 2615225, 4184360, 5230450, 10460900, 20921800]

約数ペア:

[(1, 20921800), (2, 10460900), (4, 5230450), (5, 4184360), (8, 2615225), (10, 2092180), (20, 1046090), (25, 836872), (40, 523045), (50, 418436), (73, 286600), (100, 209218), (146, 143300), (200, 104609), (292, 71650), (365, 57320), (584, 35825), (730, 28660), (1433, 14600), (1460, 14330), (1825, 11464), (2866, 7300), (2920, 7165), (3650, 5732)]