20257978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:370

約数の個数: 32

約数和(自身を含む): 34029072

約数和(自身を除く): 13771094

約数列:

[1, 2, 13, 26, 53, 61, 106, 122, 241, 482, 689, 793, 1378, 1586, 3133, 3233, 6266, 6466, 12773, 14701, 25546, 29402, 42029, 84058, 166049, 191113, 332098, 382226, 779153, 1558306, 10128989, 20257978]

約数ペア:

[(1, 20257978), (2, 10128989), (13, 1558306), (26, 779153), (53, 382226), (61, 332098), (106, 191113), (122, 166049), (241, 84058), (482, 42029), (689, 29402), (793, 25546), (1378, 14701), (1586, 12773), (3133, 6466), (3233, 6266)]