81354860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 193052160

約数和(自身を除く): 111697300

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 37, 58, 68, 74, 85, 116, 145, 148, 170, 185, 223, 290, 340, 370, 446, 493, 580, 629, 740, 892, 986, 1073, 1115, 1258, 1972, 2146, 2230, 2465, 2516, 3145, 3791, 4292, 4460, 4930, 5365, 6290, 6467, 7582, 8251, 9860, 10730, 12580, 12934, 15164, 16502, 18241, 18955, 21460, 25868, 32335, 33004, 36482, 37910, 41255, 64670, 72964, 75820, 82510, 91205, 109939, 129340, 140267, 165020, 182410, 219878, 239279, 280534, 364820, 439756, 478558, 549695, 561068, 701335, 957116, 1099390, 1196395, 1402670, 2198780, 2392790, 2805340, 4067743, 4785580, 8135486, 16270972, 20338715, 40677430, 81354860]

約数ペア:

[(1, 81354860), (2, 40677430), (4, 20338715), (5, 16270972), (10, 8135486), (17, 4785580), (20, 4067743), (29, 2805340), (34, 2392790), (37, 2198780), (58, 1402670), (68, 1196395), (74, 1099390), (85, 957116), (116, 701335), (145, 561068), (148, 549695), (170, 478558), (185, 439756), (223, 364820), (290, 280534), (340, 239279), (370, 219878), (446, 182410), (493, 165020), (580, 140267), (629, 129340), (740, 109939), (892, 91205), (986, 82510), (1073, 75820), (1115, 72964), (1258, 64670), (1972, 41255), (2146, 37910), (2230, 36482), (2465, 33004), (2516, 32335), (3145, 25868), (3791, 21460), (4292, 18955), (4460, 18241), (4930, 16502), (5365, 15164), (6290, 12934), (6467, 12580), (7582, 10730), (8251, 9860)]