81162490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{3919}}^1$

素因数の和:4054

約数の個数: 32

約数和(自身を含む): 155232000

約数和(自身を除く): 74069510

約数列:

[1, 2, 5, 10, 19, 38, 95, 109, 190, 218, 545, 1090, 2071, 3919, 4142, 7838, 10355, 19595, 20710, 39190, 74461, 148922, 372305, 427171, 744610, 854342, 2135855, 4271710, 8116249, 16232498, 40581245, 81162490]

約数ペア:

[(1, 81162490), (2, 40581245), (5, 16232498), (10, 8116249), (19, 4271710), (38, 2135855), (95, 854342), (109, 744610), (190, 427171), (218, 372305), (545, 148922), (1090, 74461), (2071, 39190), (3919, 20710), (4142, 19595), (7838, 10355)]