20921582

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 15159058

約数列:

[1, 2, 11, 22, 23, 46, 173, 239, 253, 346, 478, 506, 1903, 2629, 3806, 3979, 5258, 5497, 7958, 10994, 41347, 43769, 60467, 82694, 87538, 120934, 454817, 909634, 950981, 1901962, 10460791, 20921582]

約数ペア:

[(1, 20921582), (2, 10460791), (11, 1901962), (22, 950981), (23, 909634), (46, 454817), (173, 120934), (239, 87538), (253, 82694), (346, 60467), (478, 43769), (506, 41347), (1903, 10994), (2629, 7958), (3806, 5497), (3979, 5258)]