18921738

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:483

約数の個数: 48

約数和(自身を含む): 42325920

約数和(自身を除く): 23404182

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 67, 121, 134, 201, 242, 363, 389, 402, 726, 737, 778, 1167, 1474, 2211, 2334, 4279, 4422, 8107, 8558, 12837, 16214, 24321, 25674, 26063, 47069, 48642, 52126, 78189, 94138, 141207, 156378, 282414, 286693, 573386, 860079, 1720158, 3153623, 6307246, 9460869, 18921738]

約数ペア:

[(1, 18921738), (2, 9460869), (3, 6307246), (6, 3153623), (11, 1720158), (22, 860079), (33, 573386), (66, 286693), (67, 282414), (121, 156378), (134, 141207), (201, 94138), (242, 78189), (363, 52126), (389, 48642), (402, 47069), (726, 26063), (737, 25674), (778, 24321), (1167, 16214), (1474, 12837), (2211, 8558), (2334, 8107), (4279, 4422)]