81212840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{106859}}^1$

素因数の和:106889

約数の個数: 32

約数和(自身を含む): 192348000

約数和(自身を除く): 111135160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 106859, 213718, 427436, 534295, 854872, 1068590, 2030321, 2137180, 4060642, 4274360, 8121284, 10151605, 16242568, 20303210, 40606420, 81212840]

約数ペア:

[(1, 81212840), (2, 40606420), (4, 20303210), (5, 16242568), (8, 10151605), (10, 8121284), (19, 4274360), (20, 4060642), (38, 2137180), (40, 2030321), (76, 1068590), (95, 854872), (152, 534295), (190, 427436), (380, 213718), (760, 106859)]