129171640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248407}}^1$

素因数の和:248431

約数の個数: 32

約数和(自身を含む): 312994080

約数和(自身を除く): 183822440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 248407, 496814, 993628, 1242035, 1987256, 2484070, 3229291, 4968140, 6458582, 9936280, 12917164, 16146455, 25834328, 32292910, 64585820, 129171640]

約数ペア:

[(1, 129171640), (2, 64585820), (4, 32292910), (5, 25834328), (8, 16146455), (10, 12917164), (13, 9936280), (20, 6458582), (26, 4968140), (40, 3229291), (52, 2484070), (65, 1987256), (104, 1242035), (130, 993628), (260, 496814), (520, 248407)]