21591072

素因数分解:

$2^5\times 3^2\times {\mathrm{61}}^1\times {\mathrm{1229}}^1$

素因数の和:1306

約数の個数: 72

約数和(自身を含む): 62456940

約数和(自身を除く): 40865868

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 61, 72, 96, 122, 144, 183, 244, 288, 366, 488, 549, 732, 976, 1098, 1229, 1464, 1952, 2196, 2458, 2928, 3687, 4392, 4916, 5856, 7374, 8784, 9832, 11061, 14748, 17568, 19664, 22122, 29496, 39328, 44244, 58992, 74969, 88488, 117984, 149938, 176976, 224907, 299876, 353952, 449814, 599752, 674721, 899628, 1199504, 1349442, 1799256, 2399008, 2698884, 3598512, 5397768, 7197024, 10795536, 21591072]

約数ペア:

[(1, 21591072), (2, 10795536), (3, 7197024), (4, 5397768), (6, 3598512), (8, 2698884), (9, 2399008), (12, 1799256), (16, 1349442), (18, 1199504), (24, 899628), (32, 674721), (36, 599752), (48, 449814), (61, 353952), (72, 299876), (96, 224907), (122, 176976), (144, 149938), (183, 117984), (244, 88488), (288, 74969), (366, 58992), (488, 44244), (549, 39328), (732, 29496), (976, 22122), (1098, 19664), (1229, 17568), (1464, 14748), (1952, 11061), (2196, 9832), (2458, 8784), (2928, 7374), (3687, 5856), (4392, 4916)]