387855760

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{20117}}^1$

素因数の和:20371

約数の個数: 40

約数和(自身を含む): 905551416

約数和(自身を除く): 517695656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4820, 9640, 19280, 20117, 40234, 80468, 100585, 160936, 201170, 321872, 402340, 804680, 1609360, 4848197, 9696394, 19392788, 24240985, 38785576, 48481970, 77571152, 96963940, 193927880, 387855760]

約数ペア:

[(1, 387855760), (2, 193927880), (4, 96963940), (5, 77571152), (8, 48481970), (10, 38785576), (16, 24240985), (20, 19392788), (40, 9696394), (80, 4848197), (241, 1609360), (482, 804680), (964, 402340), (1205, 321872), (1928, 201170), (2410, 160936), (3856, 100585), (4820, 80468), (9640, 40234), (19280, 20117)]