18861381

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1601}}^1$

素因数の和:1642

約数の個数: 48

約数和(自身を含む): 35987328

約数和(自身を除く): 17125947

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 119, 153, 187, 231, 357, 561, 693, 1071, 1309, 1601, 1683, 3927, 4803, 11207, 11781, 14409, 17611, 27217, 33621, 52833, 81651, 100863, 123277, 158499, 190519, 244953, 299387, 369831, 571557, 898161, 1109493, 1714671, 2095709, 2694483, 6287127, 18861381]

約数ペア:

[(1, 18861381), (3, 6287127), (7, 2694483), (9, 2095709), (11, 1714671), (17, 1109493), (21, 898161), (33, 571557), (51, 369831), (63, 299387), (77, 244953), (99, 190519), (119, 158499), (153, 123277), (187, 100863), (231, 81651), (357, 52833), (561, 33621), (693, 27217), (1071, 17611), (1309, 14409), (1601, 11781), (1683, 11207), (3927, 4803)]