20921724

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 55189680

約数和(自身を除く): 34267956

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 113, 139, 148, 222, 226, 278, 333, 339, 417, 444, 452, 556, 666, 678, 834, 1017, 1251, 1332, 1356, 1668, 2034, 2502, 4068, 4181, 5004, 5143, 8362, 10286, 12543, 15429, 15707, 16724, 20572, 25086, 30858, 31414, 37629, 46287, 47121, 50172, 61716, 62828, 75258, 92574, 94242, 141363, 150516, 185148, 188484, 282726, 565452, 581159, 1162318, 1743477, 2324636, 3486954, 5230431, 6973908, 10460862, 20921724]

約数ペア:

[(1, 20921724), (2, 10460862), (3, 6973908), (4, 5230431), (6, 3486954), (9, 2324636), (12, 1743477), (18, 1162318), (36, 581159), (37, 565452), (74, 282726), (111, 188484), (113, 185148), (139, 150516), (148, 141363), (222, 94242), (226, 92574), (278, 75258), (333, 62828), (339, 61716), (417, 50172), (444, 47121), (452, 46287), (556, 37629), (666, 31414), (678, 30858), (834, 25086), (1017, 20572), (1251, 16724), (1332, 15707), (1356, 15429), (1668, 12543), (2034, 10286), (2502, 8362), (4068, 5143), (4181, 5004)]