21090846

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:409

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 30610914

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 51, 102, 109, 119, 218, 238, 271, 327, 357, 542, 654, 714, 763, 813, 1526, 1626, 1853, 1897, 2289, 3706, 3794, 4578, 4607, 5559, 5691, 9214, 11118, 11382, 12971, 13821, 25942, 27642, 29539, 32249, 38913, 59078, 64498, 77826, 88617, 96747, 177234, 193494, 206773, 413546, 502163, 620319, 1004326, 1240638, 1506489, 3012978, 3515141, 7030282, 10545423, 21090846]

約数ペア:

[(1, 21090846), (2, 10545423), (3, 7030282), (6, 3515141), (7, 3012978), (14, 1506489), (17, 1240638), (21, 1004326), (34, 620319), (42, 502163), (51, 413546), (102, 206773), (109, 193494), (119, 177234), (218, 96747), (238, 88617), (271, 77826), (327, 64498), (357, 59078), (542, 38913), (654, 32249), (714, 29539), (763, 27642), (813, 25942), (1526, 13821), (1626, 12971), (1853, 11382), (1897, 11118), (2289, 9214), (3706, 5691), (3794, 5559), (4578, 4607)]