80424920

素因数分解:

$2^3\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{1597}}^1$

素因数の和:2867

約数の個数: 32

約数和(自身を含む): 181213200

約数和(自身を除く): 100788280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1259, 1597, 2518, 3194, 5036, 6295, 6388, 7985, 10072, 12590, 12776, 15970, 25180, 31940, 50360, 63880, 2010623, 4021246, 8042492, 10053115, 16084984, 20106230, 40212460, 80424920]

約数ペア:

[(1, 80424920), (2, 40212460), (4, 20106230), (5, 16084984), (8, 10053115), (10, 8042492), (20, 4021246), (40, 2010623), (1259, 63880), (1597, 50360), (2518, 31940), (3194, 25180), (5036, 15970), (6295, 12776), (6388, 12590), (7985, 10072)]