80941640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155657}}^1$

素因数の和:155681

約数の個数: 32

約数和(自身を含む): 196129080

約数和(自身を除く): 115187440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 155657, 311314, 622628, 778285, 1245256, 1556570, 2023541, 3113140, 4047082, 6226280, 8094164, 10117705, 16188328, 20235410, 40470820, 80941640]

約数ペア:

[(1, 80941640), (2, 40470820), (4, 20235410), (5, 16188328), (8, 10117705), (10, 8094164), (13, 6226280), (20, 4047082), (26, 3113140), (40, 2023541), (52, 1556570), (65, 1245256), (104, 778285), (130, 622628), (260, 311314), (520, 155657)]