21482253

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{887}}^1$

素因数の和:935

約数の個数: 40

約数和(自身を含む): 36102528

約数和(自身を除く): 14620275

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 299, 351, 621, 887, 897, 1053, 1863, 2661, 2691, 7983, 8073, 11531, 20401, 23949, 24219, 34593, 61203, 71847, 103779, 183609, 265213, 311337, 550827, 795639, 934011, 1652481, 2386917, 7160751, 21482253]

約数ペア:

[(1, 21482253), (3, 7160751), (9, 2386917), (13, 1652481), (23, 934011), (27, 795639), (39, 550827), (69, 311337), (81, 265213), (117, 183609), (207, 103779), (299, 71847), (351, 61203), (621, 34593), (887, 24219), (897, 23949), (1053, 20401), (1863, 11531), (2661, 8073), (2691, 7983)]