261736280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{503339}}^1$

素因数の和:503363

約数の個数: 32

約数和(自身を含む): 634208400

約数和(自身を除く): 372472120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 503339, 1006678, 2013356, 2516695, 4026712, 5033390, 6543407, 10066780, 13086814, 20133560, 26173628, 32717035, 52347256, 65434070, 130868140, 261736280]

約数ペア:

[(1, 261736280), (2, 130868140), (4, 65434070), (5, 52347256), (8, 32717035), (10, 26173628), (13, 20133560), (20, 13086814), (26, 10066780), (40, 6543407), (52, 5033390), (65, 4026712), (104, 2516695), (130, 2013356), (260, 1006678), (520, 503339)]