198722979

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2039}}^1$

素因数の和:2089

約数の個数: 72

約数和(自身を含む): 380933280

約数和(自身を除く): 182210301

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 49, 51, 63, 91, 117, 119, 147, 153, 221, 273, 357, 441, 637, 663, 819, 833, 1071, 1547, 1911, 1989, 2039, 2499, 4641, 5733, 6117, 7497, 10829, 13923, 14273, 18351, 26507, 32487, 34663, 42819, 79521, 97461, 99911, 103989, 128457, 185549, 238563, 242641, 299733, 311967, 450619, 556647, 727923, 899199, 1298843, 1351857, 1669941, 1698487, 2183769, 3154333, 3896529, 4055571, 5095461, 9462999, 11689587, 15286383, 22080331, 28388997, 66240993, 198722979]

約数ペア:

[(1, 198722979), (3, 66240993), (7, 28388997), (9, 22080331), (13, 15286383), (17, 11689587), (21, 9462999), (39, 5095461), (49, 4055571), (51, 3896529), (63, 3154333), (91, 2183769), (117, 1698487), (119, 1669941), (147, 1351857), (153, 1298843), (221, 899199), (273, 727923), (357, 556647), (441, 450619), (637, 311967), (663, 299733), (819, 242641), (833, 238563), (1071, 185549), (1547, 128457), (1911, 103989), (1989, 99911), (2039, 97461), (2499, 79521), (4641, 42819), (5733, 34663), (6117, 32487), (7497, 26507), (10829, 18351), (13923, 14273)]