21206964

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1979}}^1$

素因数の和:2052

約数の個数: 48

約数和(自身を含む): 53222400

約数和(自身を除く): 32015436

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 47, 57, 76, 94, 114, 141, 188, 228, 282, 564, 893, 1786, 1979, 2679, 3572, 3958, 5358, 5937, 7916, 10716, 11874, 23748, 37601, 75202, 93013, 112803, 150404, 186026, 225606, 279039, 372052, 451212, 558078, 1116156, 1767247, 3534494, 5301741, 7068988, 10603482, 21206964]

約数ペア:

[(1, 21206964), (2, 10603482), (3, 7068988), (4, 5301741), (6, 3534494), (12, 1767247), (19, 1116156), (38, 558078), (47, 451212), (57, 372052), (76, 279039), (94, 225606), (114, 186026), (141, 150404), (188, 112803), (228, 93013), (282, 75202), (564, 37601), (893, 23748), (1786, 11874), (1979, 10716), (2679, 7916), (3572, 5937), (3958, 5358)]