81618550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^3\times {\mathrm{743}}^1$

素因数の和:794

約数の個数: 48

約数和(自身を含む): 164676960

約数和(自身を除く): 83058410

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 743, 845, 1486, 1690, 2197, 3715, 4225, 4394, 7430, 8450, 9659, 10985, 18575, 19318, 21970, 37150, 48295, 54925, 96590, 109850, 125567, 241475, 251134, 482950, 627835, 1255670, 1632371, 3139175, 3264742, 6278350, 8161855, 16323710, 40809275, 81618550]

約数ペア:

[(1, 81618550), (2, 40809275), (5, 16323710), (10, 8161855), (13, 6278350), (25, 3264742), (26, 3139175), (50, 1632371), (65, 1255670), (130, 627835), (169, 482950), (325, 251134), (338, 241475), (650, 125567), (743, 109850), (845, 96590), (1486, 54925), (1690, 48295), (2197, 37150), (3715, 21970), (4225, 19318), (4394, 18575), (7430, 10985), (8450, 9659)]