2780440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5347}}^1$

素因数の和:5371

約数の個数: 32

約数和(自身を含む): 6738480

約数和(自身を除く): 3958040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 5347, 10694, 21388, 26735, 42776, 53470, 69511, 106940, 139022, 213880, 278044, 347555, 556088, 695110, 1390220, 2780440]

約数ペア:

[(1, 2780440), (2, 1390220), (4, 695110), (5, 556088), (8, 347555), (10, 278044), (13, 213880), (20, 139022), (26, 106940), (40, 69511), (52, 53470), (65, 42776), (104, 26735), (130, 21388), (260, 10694), (520, 5347)]