18893007

素因数分解:

$3^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 14653233

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 243, 261, 383, 567, 609, 783, 1149, 1701, 1827, 2349, 2681, 3447, 5481, 7047, 8043, 10341, 11107, 16443, 24129, 31023, 33321, 49329, 72387, 77749, 93069, 99963, 217161, 233247, 299889, 651483, 699741, 899667, 2099223, 2699001, 6297669, 18893007]

約数ペア:

[(1, 18893007), (3, 6297669), (7, 2699001), (9, 2099223), (21, 899667), (27, 699741), (29, 651483), (63, 299889), (81, 233247), (87, 217161), (189, 99963), (203, 93069), (243, 77749), (261, 72387), (383, 49329), (567, 33321), (609, 31023), (783, 24129), (1149, 16443), (1701, 11107), (1827, 10341), (2349, 8043), (2681, 7047), (3447, 5481)]