178785580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{1549}}^1$

素因数の和:1786

約数の個数: 48

約数和(自身を含む): 390600000

約数和(自身を除く): 211814420

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 199, 290, 398, 580, 796, 995, 1549, 1990, 3098, 3980, 5771, 6196, 7745, 11542, 15490, 23084, 28855, 30980, 44921, 57710, 89842, 115420, 179684, 224605, 308251, 449210, 616502, 898420, 1233004, 1541255, 3082510, 6165020, 8939279, 17878558, 35757116, 44696395, 89392790, 178785580]

約数ペア:

[(1, 178785580), (2, 89392790), (4, 44696395), (5, 35757116), (10, 17878558), (20, 8939279), (29, 6165020), (58, 3082510), (116, 1541255), (145, 1233004), (199, 898420), (290, 616502), (398, 449210), (580, 308251), (796, 224605), (995, 179684), (1549, 115420), (1990, 89842), (3098, 57710), (3980, 44921), (5771, 30980), (6196, 28855), (7745, 23084), (11542, 15490)]