18817155

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 40255488

約数和(自身を除く): 21438333

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 41, 45, 47, 63, 93, 105, 123, 141, 155, 205, 217, 235, 279, 287, 315, 329, 369, 423, 465, 615, 651, 705, 861, 987, 1085, 1271, 1395, 1435, 1457, 1645, 1845, 1927, 1953, 2115, 2583, 2961, 3255, 3813, 4305, 4371, 4935, 5781, 6355, 7285, 8897, 9635, 9765, 10199, 11439, 12915, 13113, 13489, 14805, 17343, 19065, 21855, 26691, 28905, 30597, 40467, 44485, 50995, 57195, 59737, 65565, 67445, 80073, 86715, 91791, 121401, 133455, 152985, 179211, 202335, 298685, 400365, 418159, 458955, 537633, 607005, 896055, 1254477, 2090795, 2688165, 3763431, 6272385, 18817155]

約数ペア:

[(1, 18817155), (3, 6272385), (5, 3763431), (7, 2688165), (9, 2090795), (15, 1254477), (21, 896055), (31, 607005), (35, 537633), (41, 458955), (45, 418159), (47, 400365), (63, 298685), (93, 202335), (105, 179211), (123, 152985), (141, 133455), (155, 121401), (205, 91791), (217, 86715), (235, 80073), (279, 67445), (287, 65565), (315, 59737), (329, 57195), (369, 50995), (423, 44485), (465, 40467), (615, 30597), (651, 28905), (705, 26691), (861, 21855), (987, 19065), (1085, 17343), (1271, 14805), (1395, 13489), (1435, 13113), (1457, 12915), (1645, 11439), (1845, 10199), (1927, 9765), (1953, 9635), (2115, 8897), (2583, 7285), (2961, 6355), (3255, 5781), (3813, 4935), (4305, 4371)]