80651540

素因数分解:

$2^2\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{3203}}^1$

素因数の和:4471

約数の個数: 24

約数和(自身を含む): 169555680

約数和(自身を除く): 88904140

約数列:

[1, 2, 4, 5, 10, 20, 1259, 2518, 3203, 5036, 6295, 6406, 12590, 12812, 16015, 25180, 32030, 64060, 4032577, 8065154, 16130308, 20162885, 40325770, 80651540]

約数ペア:

[(1, 80651540), (2, 40325770), (4, 20162885), (5, 16130308), (10, 8065154), (20, 4032577), (1259, 64060), (2518, 32030), (3203, 25180), (5036, 16015), (6295, 12812), (6406, 12590)]