21455104

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 49301280

約数和(自身を除く): 27846176

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 128, 152, 176, 209, 256, 304, 352, 401, 418, 608, 704, 802, 836, 1216, 1408, 1604, 1672, 2432, 2816, 3208, 3344, 4411, 4864, 6416, 6688, 7619, 8822, 12832, 13376, 15238, 17644, 25664, 26752, 30476, 35288, 51328, 53504, 60952, 70576, 83809, 102656, 121904, 141152, 167618, 243808, 282304, 335236, 487616, 564608, 670472, 975232, 1129216, 1340944, 1950464, 2681888, 5363776, 10727552, 21455104]

約数ペア:

[(1, 21455104), (2, 10727552), (4, 5363776), (8, 2681888), (11, 1950464), (16, 1340944), (19, 1129216), (22, 975232), (32, 670472), (38, 564608), (44, 487616), (64, 335236), (76, 282304), (88, 243808), (128, 167618), (152, 141152), (176, 121904), (209, 102656), (256, 83809), (304, 70576), (352, 60952), (401, 53504), (418, 51328), (608, 35288), (704, 30476), (802, 26752), (836, 25664), (1216, 17644), (1408, 15238), (1604, 13376), (1672, 12832), (2432, 8822), (2816, 7619), (3208, 6688), (3344, 6416), (4411, 4864)]