21949856

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 46226376

約数和(自身を除く): 24276520

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 157, 257, 272, 314, 514, 544, 628, 1028, 1256, 2056, 2512, 2669, 4112, 4369, 5024, 5338, 8224, 8738, 10676, 17476, 21352, 34952, 40349, 42704, 69904, 80698, 85408, 139808, 161396, 322792, 645584, 685933, 1291168, 1371866, 2743732, 5487464, 10974928, 21949856]

約数ペア:

[(1, 21949856), (2, 10974928), (4, 5487464), (8, 2743732), (16, 1371866), (17, 1291168), (32, 685933), (34, 645584), (68, 322792), (136, 161396), (157, 139808), (257, 85408), (272, 80698), (314, 69904), (514, 42704), (544, 40349), (628, 34952), (1028, 21352), (1256, 17476), (2056, 10676), (2512, 8738), (2669, 8224), (4112, 5338), (4369, 5024)]