12289940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47269}}^1$

素因数の和:47291

約数の個数: 24

約数和(自身を含む): 27794760

約数和(自身を除く): 15504820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 47269, 94538, 189076, 236345, 472690, 614497, 945380, 1228994, 2457988, 3072485, 6144970, 12289940]

約数ペア:

[(1, 12289940), (2, 6144970), (4, 3072485), (5, 2457988), (10, 1228994), (13, 945380), (20, 614497), (26, 472690), (52, 236345), (65, 189076), (130, 94538), (260, 47269)]