19393840

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1627}}^1$

素因数の和:1789

約数の個数: 40

約数和(自身を含む): 45421200

約数和(自身を除く): 26027360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1627, 2384, 2980, 3254, 5960, 6508, 8135, 11920, 13016, 16270, 26032, 32540, 65080, 130160, 242423, 484846, 969692, 1212115, 1939384, 2424230, 3878768, 4848460, 9696920, 19393840]

約数ペア:

[(1, 19393840), (2, 9696920), (4, 4848460), (5, 3878768), (8, 2424230), (10, 1939384), (16, 1212115), (20, 969692), (40, 484846), (80, 242423), (149, 130160), (298, 65080), (596, 32540), (745, 26032), (1192, 16270), (1490, 13016), (1627, 11920), (2384, 8135), (2980, 6508), (3254, 5960)]