21390804

素因数分解:

$2^2\times 3^5\times {\mathrm{59}}^1\times {\mathrm{373}}^1$

素因数の和:451

約数の個数: 72

約数和(自身を含む): 57177120

約数和(自身を除く): 35786316

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 59, 81, 108, 118, 162, 177, 236, 243, 324, 354, 373, 486, 531, 708, 746, 972, 1062, 1119, 1492, 1593, 2124, 2238, 3186, 3357, 4476, 4779, 6372, 6714, 9558, 10071, 13428, 14337, 19116, 20142, 22007, 28674, 30213, 40284, 44014, 57348, 60426, 66021, 88028, 90639, 120852, 132042, 181278, 198063, 264084, 362556, 396126, 594189, 792252, 1188378, 1782567, 2376756, 3565134, 5347701, 7130268, 10695402, 21390804]

約数ペア:

[(1, 21390804), (2, 10695402), (3, 7130268), (4, 5347701), (6, 3565134), (9, 2376756), (12, 1782567), (18, 1188378), (27, 792252), (36, 594189), (54, 396126), (59, 362556), (81, 264084), (108, 198063), (118, 181278), (162, 132042), (177, 120852), (236, 90639), (243, 88028), (324, 66021), (354, 60426), (373, 57348), (486, 44014), (531, 40284), (708, 30213), (746, 28674), (972, 22007), (1062, 20142), (1119, 19116), (1492, 14337), (1593, 13428), (2124, 10071), (2238, 9558), (3186, 6714), (3357, 6372), (4476, 4779)]