19205109

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 36492768

約数和(自身を除く): 17287659

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 49, 63, 77, 99, 107, 111, 147, 231, 259, 321, 333, 407, 441, 539, 693, 749, 777, 963, 1177, 1221, 1617, 1813, 2247, 2331, 2849, 3531, 3663, 3959, 4851, 5243, 5439, 6741, 8239, 8547, 10593, 11877, 15729, 16317, 19943, 24717, 25641, 27713, 35631, 43549, 47187, 57673, 59829, 74151, 83139, 130647, 173019, 179487, 193991, 249417, 304843, 391941, 519057, 581973, 914529, 1745919, 2133901, 2743587, 6401703, 19205109]

約数ペア:

[(1, 19205109), (3, 6401703), (7, 2743587), (9, 2133901), (11, 1745919), (21, 914529), (33, 581973), (37, 519057), (49, 391941), (63, 304843), (77, 249417), (99, 193991), (107, 179487), (111, 173019), (147, 130647), (231, 83139), (259, 74151), (321, 59829), (333, 57673), (407, 47187), (441, 43549), (539, 35631), (693, 27713), (749, 25641), (777, 24717), (963, 19943), (1177, 16317), (1221, 15729), (1617, 11877), (1813, 10593), (2247, 8547), (2331, 8239), (2849, 6741), (3531, 5439), (3663, 5243), (3959, 4851)]