81868040

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:183

約数の個数: 96

約数和(自身を含む): 198880920

約数和(自身を除く): 117012880

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 53, 73, 92, 106, 115, 146, 184, 212, 230, 265, 292, 365, 424, 460, 529, 530, 584, 730, 920, 1058, 1060, 1219, 1460, 1679, 2116, 2120, 2438, 2645, 2920, 3358, 3869, 4232, 4876, 5290, 6095, 6716, 7738, 8395, 9752, 10580, 12190, 13432, 15476, 16790, 19345, 21160, 24380, 28037, 30952, 33580, 38617, 38690, 48760, 56074, 67160, 77234, 77380, 88987, 112148, 140185, 154468, 154760, 177974, 193085, 224296, 280370, 308936, 355948, 386170, 444935, 560740, 711896, 772340, 889870, 1121480, 1544680, 1779740, 2046701, 3559480, 4093402, 8186804, 10233505, 16373608, 20467010, 40934020, 81868040]

約数ペア:

[(1, 81868040), (2, 40934020), (4, 20467010), (5, 16373608), (8, 10233505), (10, 8186804), (20, 4093402), (23, 3559480), (40, 2046701), (46, 1779740), (53, 1544680), (73, 1121480), (92, 889870), (106, 772340), (115, 711896), (146, 560740), (184, 444935), (212, 386170), (230, 355948), (265, 308936), (292, 280370), (365, 224296), (424, 193085), (460, 177974), (529, 154760), (530, 154468), (584, 140185), (730, 112148), (920, 88987), (1058, 77380), (1060, 77234), (1219, 67160), (1460, 56074), (1679, 48760), (2116, 38690), (2120, 38617), (2438, 33580), (2645, 30952), (2920, 28037), (3358, 24380), (3869, 21160), (4232, 19345), (4876, 16790), (5290, 15476), (6095, 13432), (6716, 12190), (7738, 10580), (8395, 9752)]