21741940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2671}}^1$

素因数の和:2728

約数の個数: 48

約数和(自身を含む): 51174144

約数和(自身を除く): 29432204

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2671, 4070, 5342, 8140, 10684, 13355, 26710, 29381, 53420, 58762, 98827, 117524, 146905, 197654, 293810, 395308, 494135, 587620, 988270, 1087097, 1976540, 2174194, 4348388, 5435485, 10870970, 21741940]

約数ペア:

[(1, 21741940), (2, 10870970), (4, 5435485), (5, 4348388), (10, 2174194), (11, 1976540), (20, 1087097), (22, 988270), (37, 587620), (44, 494135), (55, 395308), (74, 293810), (110, 197654), (148, 146905), (185, 117524), (220, 98827), (370, 58762), (407, 53420), (740, 29381), (814, 26710), (1628, 13355), (2035, 10684), (2671, 8140), (4070, 5342)]