72643220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{279397}}^1$

素因数の和:279419

約数の個数: 24

約数和(自身を含む): 164286024

約数和(自身を除く): 91642804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 279397, 558794, 1117588, 1396985, 2793970, 3632161, 5587940, 7264322, 14528644, 18160805, 36321610, 72643220]

約数ペア:

[(1, 72643220), (2, 36321610), (4, 18160805), (5, 14528644), (10, 7264322), (13, 5587940), (20, 3632161), (26, 2793970), (52, 1396985), (65, 1117588), (130, 558794), (260, 279397)]