21813858

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{131}}^1$

素因数の和:208

約数の個数: 72

約数和(自身を含む): 53806896

約数和(自身を除く): 31993038

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 29, 33, 58, 66, 87, 99, 131, 174, 198, 261, 262, 319, 393, 522, 638, 786, 841, 957, 1179, 1441, 1682, 1914, 2358, 2523, 2871, 2882, 3799, 4323, 5046, 5742, 7569, 7598, 8646, 9251, 11397, 12969, 15138, 18502, 22794, 25938, 27753, 34191, 41789, 55506, 68382, 83259, 83578, 110171, 125367, 166518, 220342, 250734, 330513, 376101, 661026, 752202, 991539, 1211881, 1983078, 2423762, 3635643, 7271286, 10906929, 21813858]

約数ペア:

[(1, 21813858), (2, 10906929), (3, 7271286), (6, 3635643), (9, 2423762), (11, 1983078), (18, 1211881), (22, 991539), (29, 752202), (33, 661026), (58, 376101), (66, 330513), (87, 250734), (99, 220342), (131, 166518), (174, 125367), (198, 110171), (261, 83578), (262, 83259), (319, 68382), (393, 55506), (522, 41789), (638, 34191), (786, 27753), (841, 25938), (957, 22794), (1179, 18502), (1441, 15138), (1682, 12969), (1914, 11397), (2358, 9251), (2523, 8646), (2871, 7598), (2882, 7569), (3799, 5742), (4323, 5046)]