21996650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:855

約数の個数: 48

約数和(自身を含む): 45142944

約数和(自身を除く): 23146294

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 86, 130, 215, 325, 430, 559, 650, 787, 1075, 1118, 1574, 2150, 2795, 3935, 5590, 7870, 10231, 13975, 19675, 20462, 27950, 33841, 39350, 51155, 67682, 102310, 169205, 255775, 338410, 439933, 511550, 846025, 879866, 1692050, 2199665, 4399330, 10998325, 21996650]

約数ペア:

[(1, 21996650), (2, 10998325), (5, 4399330), (10, 2199665), (13, 1692050), (25, 879866), (26, 846025), (43, 511550), (50, 439933), (65, 338410), (86, 255775), (130, 169205), (215, 102310), (325, 67682), (430, 51155), (559, 39350), (650, 33841), (787, 27950), (1075, 20462), (1118, 19675), (1574, 13975), (2150, 10231), (2795, 7870), (3935, 5590)]