84987380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1609}}^1$

素因数の和:1776

約数の個数: 48

約数和(自身を含む): 189336000

約数和(自身を除く): 104348620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 1609, 2641, 2780, 3218, 5282, 6436, 8045, 10564, 13205, 16090, 26410, 30571, 32180, 52820, 61142, 122284, 152855, 223651, 305710, 447302, 611420, 894604, 1118255, 2236510, 4249369, 4473020, 8498738, 16997476, 21246845, 42493690, 84987380]

約数ペア:

[(1, 84987380), (2, 42493690), (4, 21246845), (5, 16997476), (10, 8498738), (19, 4473020), (20, 4249369), (38, 2236510), (76, 1118255), (95, 894604), (139, 611420), (190, 447302), (278, 305710), (380, 223651), (556, 152855), (695, 122284), (1390, 61142), (1609, 52820), (2641, 32180), (2780, 30571), (3218, 26410), (5282, 16090), (6436, 13205), (8045, 10564)]