20011948

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:438

約数の個数: 36

約数和(自身を含む): 38878560

約数和(自身を除く): 18866612

約数列:

[1, 2, 4, 11, 22, 44, 121, 173, 239, 242, 346, 478, 484, 692, 956, 1903, 2629, 3806, 5258, 7612, 10516, 20933, 28919, 41347, 41866, 57838, 82694, 83732, 115676, 165388, 454817, 909634, 1819268, 5002987, 10005974, 20011948]

約数ペア:

[(1, 20011948), (2, 10005974), (4, 5002987), (11, 1819268), (22, 909634), (44, 454817), (121, 165388), (173, 115676), (239, 83732), (242, 82694), (346, 57838), (478, 41866), (484, 41347), (692, 28919), (956, 20933), (1903, 10516), (2629, 7612), (3806, 5258)]