21838520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49633}}^1$

素因数の和:49655

約数の個数: 32

約数和(自身を含む): 53604720

約数和(自身を除く): 31766200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49633, 99266, 198532, 248165, 397064, 496330, 545963, 992660, 1091926, 1985320, 2183852, 2729815, 4367704, 5459630, 10919260, 21838520]

約数ペア:

[(1, 21838520), (2, 10919260), (4, 5459630), (5, 4367704), (8, 2729815), (10, 2183852), (11, 1985320), (20, 1091926), (22, 992660), (40, 545963), (44, 496330), (55, 397064), (88, 248165), (110, 198532), (220, 99266), (440, 49633)]