654680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1259}}^1$

素因数の和:1283

約数の個数: 32

約数和(自身を含む): 1587600

約数和(自身を除く): 932920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1259, 2518, 5036, 6295, 10072, 12590, 16367, 25180, 32734, 50360, 65468, 81835, 130936, 163670, 327340, 654680]

約数ペア:

[(1, 654680), (2, 327340), (4, 163670), (5, 130936), (8, 81835), (10, 65468), (13, 50360), (20, 32734), (26, 25180), (40, 16367), (52, 12590), (65, 10072), (104, 6295), (130, 5036), (260, 2518), (520, 1259)]