261821820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{335669}}^1$

素因数の和:335694

約数の個数: 48

約数和(自身を含む): 789495840

約数和(自身を除く): 527674020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 335669, 671338, 1007007, 1342676, 1678345, 2014014, 3356690, 4028028, 4363697, 5035035, 6713380, 8727394, 10070070, 13091091, 17454788, 20140140, 21818485, 26182182, 43636970, 52364364, 65455455, 87273940, 130910910, 261821820]

約数ペア:

[(1, 261821820), (2, 130910910), (3, 87273940), (4, 65455455), (5, 52364364), (6, 43636970), (10, 26182182), (12, 21818485), (13, 20140140), (15, 17454788), (20, 13091091), (26, 10070070), (30, 8727394), (39, 6713380), (52, 5035035), (60, 4363697), (65, 4028028), (78, 3356690), (130, 2014014), (156, 1678345), (195, 1342676), (260, 1007007), (390, 671338), (780, 335669)]