280995140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 646216704

約数和(自身を除く): 365221564

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 47, 82, 92, 94, 115, 164, 188, 205, 230, 235, 317, 410, 460, 470, 634, 820, 940, 943, 1081, 1268, 1585, 1886, 1927, 2162, 3170, 3772, 3854, 4324, 4715, 5405, 6340, 7291, 7708, 9430, 9635, 10810, 12997, 14582, 14899, 18860, 19270, 21620, 25994, 29164, 29798, 36455, 38540, 44321, 51988, 59596, 64985, 72910, 74495, 88642, 129970, 145820, 148990, 177284, 221605, 259940, 297980, 298931, 342677, 443210, 597862, 610859, 685354, 886420, 1195724, 1221718, 1370708, 1494655, 1713385, 2443436, 2989310, 3054295, 3426770, 5978620, 6108590, 6853540, 12217180, 14049757, 28099514, 56199028, 70248785, 140497570, 280995140]

約数ペア:

[(1, 280995140), (2, 140497570), (4, 70248785), (5, 56199028), (10, 28099514), (20, 14049757), (23, 12217180), (41, 6853540), (46, 6108590), (47, 5978620), (82, 3426770), (92, 3054295), (94, 2989310), (115, 2443436), (164, 1713385), (188, 1494655), (205, 1370708), (230, 1221718), (235, 1195724), (317, 886420), (410, 685354), (460, 610859), (470, 597862), (634, 443210), (820, 342677), (940, 298931), (943, 297980), (1081, 259940), (1268, 221605), (1585, 177284), (1886, 148990), (1927, 145820), (2162, 129970), (3170, 88642), (3772, 74495), (3854, 72910), (4324, 64985), (4715, 59596), (5405, 51988), (6340, 44321), (7291, 38540), (7708, 36455), (9430, 29798), (9635, 29164), (10810, 25994), (12997, 21620), (14582, 19270), (14899, 18860)]