20519316

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:389

約数の個数: 72

約数和(自身を含む): 55255200

約数和(自身を除く): 34735884

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 131, 171, 228, 229, 262, 342, 393, 458, 524, 684, 687, 786, 916, 1179, 1374, 1572, 2061, 2358, 2489, 2748, 4122, 4351, 4716, 4978, 7467, 8244, 8702, 9956, 13053, 14934, 17404, 22401, 26106, 29868, 29999, 39159, 44802, 52212, 59998, 78318, 89604, 89997, 119996, 156636, 179994, 269991, 359988, 539982, 569981, 1079964, 1139962, 1709943, 2279924, 3419886, 5129829, 6839772, 10259658, 20519316]

約数ペア:

[(1, 20519316), (2, 10259658), (3, 6839772), (4, 5129829), (6, 3419886), (9, 2279924), (12, 1709943), (18, 1139962), (19, 1079964), (36, 569981), (38, 539982), (57, 359988), (76, 269991), (114, 179994), (131, 156636), (171, 119996), (228, 89997), (229, 89604), (262, 78318), (342, 59998), (393, 52212), (458, 44802), (524, 39159), (684, 29999), (687, 29868), (786, 26106), (916, 22401), (1179, 17404), (1374, 14934), (1572, 13053), (2061, 9956), (2358, 8702), (2489, 8244), (2748, 7467), (4122, 4978), (4351, 4716)]