28681345

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 17767295

約数列:

[1, 5, 7, 11, 23, 35, 41, 55, 77, 79, 115, 161, 205, 253, 287, 385, 395, 451, 553, 805, 869, 943, 1265, 1435, 1771, 1817, 2255, 2765, 3157, 3239, 4345, 4715, 6083, 6601, 8855, 9085, 10373, 12719, 15785, 16195, 19987, 22673, 30415, 33005, 35629, 51865, 63595, 72611, 74497, 99935, 113365, 139909, 178145, 249403, 363055, 372485, 521479, 699545, 819467, 1247015, 2607395, 4097335, 5736269, 28681345]

約数ペア:

[(1, 28681345), (5, 5736269), (7, 4097335), (11, 2607395), (23, 1247015), (35, 819467), (41, 699545), (55, 521479), (77, 372485), (79, 363055), (115, 249403), (161, 178145), (205, 139909), (253, 113365), (287, 99935), (385, 74497), (395, 72611), (451, 63595), (553, 51865), (805, 35629), (869, 33005), (943, 30415), (1265, 22673), (1435, 19987), (1771, 16195), (1817, 15785), (2255, 12719), (2765, 10373), (3157, 9085), (3239, 8855), (4345, 6601), (4715, 6083)]