21206735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 30238272

約数和(自身を除く): 9031537

約数列:

[1, 5, 11, 17, 37, 55, 85, 185, 187, 407, 613, 629, 935, 2035, 3065, 3145, 6743, 6919, 10421, 22681, 33715, 34595, 52105, 113405, 114631, 249491, 385577, 573155, 1247455, 1927885, 4241347, 21206735]

約数ペア:

[(1, 21206735), (5, 4241347), (11, 1927885), (17, 1247455), (37, 573155), (55, 385577), (85, 249491), (185, 114631), (187, 113405), (407, 52105), (613, 34595), (629, 33715), (935, 22681), (2035, 10421), (3065, 6919), (3145, 6743)]