127535720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{245261}}^1$

素因数の和:245285

約数の個数: 32

約数和(自身を含む): 309030120

約数和(自身を除く): 181494400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 245261, 490522, 981044, 1226305, 1962088, 2452610, 3188393, 4905220, 6376786, 9810440, 12753572, 15941965, 25507144, 31883930, 63767860, 127535720]

約数ペア:

[(1, 127535720), (2, 63767860), (4, 31883930), (5, 25507144), (8, 15941965), (10, 12753572), (13, 9810440), (20, 6376786), (26, 4905220), (40, 3188393), (52, 2452610), (65, 1962088), (104, 1226305), (130, 981044), (260, 490522), (520, 245261)]