178672720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1663}}^1$

素因数の和:1772

約数の個数: 80

約数和(自身を含む): 445685760

約数和(自身を除く): 267013040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 79, 80, 85, 136, 158, 170, 272, 316, 340, 395, 632, 680, 790, 1264, 1343, 1360, 1580, 1663, 2686, 3160, 3326, 5372, 6320, 6652, 6715, 8315, 10744, 13304, 13430, 16630, 21488, 26608, 26860, 28271, 33260, 53720, 56542, 66520, 107440, 113084, 131377, 133040, 141355, 226168, 262754, 282710, 452336, 525508, 565420, 656885, 1051016, 1130840, 1313770, 2102032, 2233409, 2261680, 2627540, 4466818, 5255080, 8933636, 10510160, 11167045, 17867272, 22334090, 35734544, 44668180, 89336360, 178672720]

約数ペア:

[(1, 178672720), (2, 89336360), (4, 44668180), (5, 35734544), (8, 22334090), (10, 17867272), (16, 11167045), (17, 10510160), (20, 8933636), (34, 5255080), (40, 4466818), (68, 2627540), (79, 2261680), (80, 2233409), (85, 2102032), (136, 1313770), (158, 1130840), (170, 1051016), (272, 656885), (316, 565420), (340, 525508), (395, 452336), (632, 282710), (680, 262754), (790, 226168), (1264, 141355), (1343, 133040), (1360, 131377), (1580, 113084), (1663, 107440), (2686, 66520), (3160, 56542), (3326, 53720), (5372, 33260), (6320, 28271), (6652, 26860), (6715, 26608), (8315, 21488), (10744, 16630), (13304, 13430)]