21539408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:372

約数の個数: 80

約数和(自身を含む): 50461056

約数和(自身を除く): 28921648

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 23, 34, 44, 46, 68, 88, 92, 136, 176, 184, 187, 253, 272, 313, 368, 374, 391, 506, 626, 748, 782, 1012, 1252, 1496, 1564, 2024, 2504, 2992, 3128, 3443, 4048, 4301, 5008, 5321, 6256, 6886, 7199, 8602, 10642, 13772, 14398, 17204, 21284, 27544, 28796, 34408, 42568, 55088, 57592, 58531, 68816, 79189, 85136, 115184, 117062, 122383, 158378, 234124, 244766, 316756, 468248, 489532, 633512, 936496, 979064, 1267024, 1346213, 1958128, 2692426, 5384852, 10769704, 21539408]

約数ペア:

[(1, 21539408), (2, 10769704), (4, 5384852), (8, 2692426), (11, 1958128), (16, 1346213), (17, 1267024), (22, 979064), (23, 936496), (34, 633512), (44, 489532), (46, 468248), (68, 316756), (88, 244766), (92, 234124), (136, 158378), (176, 122383), (184, 117062), (187, 115184), (253, 85136), (272, 79189), (313, 68816), (368, 58531), (374, 57592), (391, 55088), (506, 42568), (626, 34408), (748, 28796), (782, 27544), (1012, 21284), (1252, 17204), (1496, 14398), (1564, 13772), (2024, 10642), (2504, 8602), (2992, 7199), (3128, 6886), (3443, 6256), (4048, 5321), (4301, 5008)]