21486894

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 51287040

約数和(自身を除く): 29800146

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 79, 143, 158, 237, 286, 317, 429, 474, 634, 858, 869, 951, 1027, 1738, 1902, 2054, 2607, 3081, 3487, 4121, 5214, 6162, 6974, 8242, 10461, 11297, 12363, 20922, 22594, 24726, 25043, 33891, 45331, 50086, 67782, 75129, 90662, 135993, 150258, 271986, 275473, 325559, 550946, 651118, 826419, 976677, 1652838, 1953354, 3581149, 7162298, 10743447, 21486894]

約数ペア:

[(1, 21486894), (2, 10743447), (3, 7162298), (6, 3581149), (11, 1953354), (13, 1652838), (22, 976677), (26, 826419), (33, 651118), (39, 550946), (66, 325559), (78, 275473), (79, 271986), (143, 150258), (158, 135993), (237, 90662), (286, 75129), (317, 67782), (429, 50086), (474, 45331), (634, 33891), (858, 25043), (869, 24726), (951, 22594), (1027, 20922), (1738, 12363), (1902, 11297), (2054, 10461), (2607, 8242), (3081, 6974), (3487, 6162), (4121, 5214)]