206440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 501480

約数和(自身を除く): 295040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 397, 520, 794, 1588, 1985, 3176, 3970, 5161, 7940, 10322, 15880, 20644, 25805, 41288, 51610, 103220, 206440]

約数ペア:

[(1, 206440), (2, 103220), (4, 51610), (5, 41288), (8, 25805), (10, 20644), (13, 15880), (20, 10322), (26, 7940), (40, 5161), (52, 3970), (65, 3176), (104, 1985), (130, 1588), (260, 794), (397, 520)]