21981612

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{389}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 54643680

約数和(自身を除く): 32662068

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 277, 389, 554, 778, 831, 1108, 1167, 1556, 1662, 2334, 3324, 4668, 4709, 6613, 9418, 13226, 14127, 18836, 19839, 26452, 28254, 39678, 56508, 79356, 107753, 215506, 323259, 431012, 646518, 1293036, 1831801, 3663602, 5495403, 7327204, 10990806, 21981612]

約数ペア:

[(1, 21981612), (2, 10990806), (3, 7327204), (4, 5495403), (6, 3663602), (12, 1831801), (17, 1293036), (34, 646518), (51, 431012), (68, 323259), (102, 215506), (204, 107753), (277, 79356), (389, 56508), (554, 39678), (778, 28254), (831, 26452), (1108, 19839), (1167, 18836), (1556, 14127), (1662, 13226), (2334, 9418), (3324, 6613), (4668, 4709)]