123638960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{90911}}^1$

素因数の和:90941

約数の個数: 40

約数和(自身を含む): 304373376

約数和(自身を除く): 180734416

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 90911, 181822, 363644, 454555, 727288, 909110, 1454576, 1545487, 1818220, 3090974, 3636440, 6181948, 7272880, 7727435, 12363896, 15454870, 24727792, 30909740, 61819480, 123638960]

約数ペア:

[(1, 123638960), (2, 61819480), (4, 30909740), (5, 24727792), (8, 15454870), (10, 12363896), (16, 7727435), (17, 7272880), (20, 6181948), (34, 3636440), (40, 3090974), (68, 1818220), (80, 1545487), (85, 1454576), (136, 909110), (170, 727288), (272, 454555), (340, 363644), (680, 181822), (1360, 90911)]