20123478

素因数分解:

$2^1\times 3^4\times {\mathrm{17}}^1\times {\mathrm{7307}}^1$

素因数の和:7338

約数の個数: 40

約数和(自身を含む): 47750472

約数和(自身を除く): 27626994

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 81, 102, 153, 162, 306, 459, 918, 1377, 2754, 7307, 14614, 21921, 43842, 65763, 124219, 131526, 197289, 248438, 372657, 394578, 591867, 745314, 1117971, 1183734, 2235942, 3353913, 6707826, 10061739, 20123478]

約数ペア:

[(1, 20123478), (2, 10061739), (3, 6707826), (6, 3353913), (9, 2235942), (17, 1183734), (18, 1117971), (27, 745314), (34, 591867), (51, 394578), (54, 372657), (81, 248438), (102, 197289), (153, 131526), (162, 124219), (306, 65763), (459, 43842), (918, 21921), (1377, 14614), (2754, 7307)]