18809973

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 36226008

約数和(自身を除く): 17416035

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 49, 51, 63, 91, 117, 119, 147, 153, 193, 221, 273, 357, 441, 579, 637, 663, 819, 833, 1071, 1351, 1547, 1737, 1911, 1989, 2499, 2509, 3281, 4053, 4641, 5733, 7497, 7527, 9457, 9843, 10829, 12159, 13923, 17563, 22581, 22967, 28371, 29529, 32487, 42653, 52689, 68901, 85113, 97461, 122941, 127959, 158067, 160769, 206703, 298571, 368823, 383877, 482307, 895713, 1106469, 1446921, 2089997, 2687139, 6269991, 18809973]

約数ペア:

[(1, 18809973), (3, 6269991), (7, 2687139), (9, 2089997), (13, 1446921), (17, 1106469), (21, 895713), (39, 482307), (49, 383877), (51, 368823), (63, 298571), (91, 206703), (117, 160769), (119, 158067), (147, 127959), (153, 122941), (193, 97461), (221, 85113), (273, 68901), (357, 52689), (441, 42653), (579, 32487), (637, 29529), (663, 28371), (819, 22967), (833, 22581), (1071, 17563), (1351, 13923), (1547, 12159), (1737, 10829), (1911, 9843), (1989, 9457), (2499, 7527), (2509, 7497), (3281, 5733), (4053, 4641)]