20479407

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 33008640

約数和(自身を除く): 12529233

約数列:

[1, 3, 13, 17, 23, 39, 51, 69, 79, 221, 237, 289, 299, 391, 663, 867, 897, 1027, 1173, 1343, 1817, 3081, 3757, 4029, 5083, 5451, 6647, 11271, 15249, 17459, 19941, 22831, 23621, 30889, 52377, 68493, 70863, 86411, 92667, 259233, 296803, 401557, 525113, 890409, 1204671, 1575339, 6826469, 20479407]

約数ペア:

[(1, 20479407), (3, 6826469), (13, 1575339), (17, 1204671), (23, 890409), (39, 525113), (51, 401557), (69, 296803), (79, 259233), (221, 92667), (237, 86411), (289, 70863), (299, 68493), (391, 52377), (663, 30889), (867, 23621), (897, 22831), (1027, 19941), (1173, 17459), (1343, 15249), (1817, 11271), (3081, 6647), (3757, 5451), (4029, 5083)]