20721892

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{4357}}^1$

素因数の和:4431

約数の個数: 24

約数和(自身を含む): 38437560

約数和(自身を除く): 17715668

約数列:

[1, 2, 4, 29, 41, 58, 82, 116, 164, 1189, 2378, 4357, 4756, 8714, 17428, 126353, 178637, 252706, 357274, 505412, 714548, 5180473, 10360946, 20721892]

約数ペア:

[(1, 20721892), (2, 10360946), (4, 5180473), (29, 714548), (41, 505412), (58, 357274), (82, 252706), (116, 178637), (164, 126353), (1189, 17428), (2378, 8714), (4357, 4756)]