201440920

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{16193}}^1$

素因数の和:16515

約数の個数: 32

約数和(自身を含む): 454727520

約数和(自身を除く): 253286600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 16193, 32386, 64772, 80965, 129544, 161930, 323860, 647720, 5036023, 10072046, 20144092, 25180115, 40288184, 50360230, 100720460, 201440920]

約数ペア:

[(1, 201440920), (2, 100720460), (4, 50360230), (5, 40288184), (8, 25180115), (10, 20144092), (20, 10072046), (40, 5036023), (311, 647720), (622, 323860), (1244, 161930), (1555, 129544), (2488, 80965), (3110, 64772), (6220, 32386), (12440, 16193)]