178757720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{1321}}^1$

素因数の和:1548

約数の個数: 64

約数和(自身を含む): 428328000

約数和(自身を除く): 249570280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 199, 340, 398, 680, 796, 995, 1321, 1592, 1990, 2642, 3383, 3980, 5284, 6605, 6766, 7960, 10568, 13210, 13532, 16915, 22457, 26420, 27064, 33830, 44914, 52840, 67660, 89828, 112285, 135320, 179656, 224570, 262879, 449140, 525758, 898280, 1051516, 1314395, 2103032, 2628790, 4468943, 5257580, 8937886, 10515160, 17875772, 22344715, 35751544, 44689430, 89378860, 178757720]

約数ペア:

[(1, 178757720), (2, 89378860), (4, 44689430), (5, 35751544), (8, 22344715), (10, 17875772), (17, 10515160), (20, 8937886), (34, 5257580), (40, 4468943), (68, 2628790), (85, 2103032), (136, 1314395), (170, 1051516), (199, 898280), (340, 525758), (398, 449140), (680, 262879), (796, 224570), (995, 179656), (1321, 135320), (1592, 112285), (1990, 89828), (2642, 67660), (3383, 52840), (3980, 44914), (5284, 33830), (6605, 27064), (6766, 26420), (7960, 22457), (10568, 16915), (13210, 13532)]