258464440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{497047}}^1$

素因数の和:497071

約数の個数: 32

約数和(自身を含む): 626280480

約数和(自身を除く): 367816040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 497047, 994094, 1988188, 2485235, 3976376, 4970470, 6461611, 9940940, 12923222, 19881880, 25846444, 32308055, 51692888, 64616110, 129232220, 258464440]

約数ペア:

[(1, 258464440), (2, 129232220), (4, 64616110), (5, 51692888), (8, 32308055), (10, 25846444), (13, 19881880), (20, 12923222), (26, 9940940), (40, 6461611), (52, 4970470), (65, 3976376), (104, 2485235), (130, 1988188), (260, 994094), (520, 497047)]