78231220

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{12497}}^1$

素因数の和:12819

約数の個数: 24

約数和(自身を含む): 164823624

約数和(自身を除く): 86592404

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 6260, 12497, 24994, 49988, 62485, 124970, 249940, 3911561, 7823122, 15646244, 19557805, 39115610, 78231220]

約数ペア:

[(1, 78231220), (2, 39115610), (4, 19557805), (5, 15646244), (10, 7823122), (20, 3911561), (313, 249940), (626, 124970), (1252, 62485), (1565, 49988), (3130, 24994), (6260, 12497)]