19892421

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 11976507

約数列:

[1, 3, 9, 31, 37, 41, 47, 93, 111, 123, 141, 279, 333, 369, 423, 1147, 1271, 1457, 1517, 1739, 1927, 3441, 3813, 4371, 4551, 5217, 5781, 10323, 11439, 13113, 13653, 15651, 17343, 47027, 53909, 59737, 71299, 141081, 161727, 179211, 213897, 423243, 485181, 537633, 641691, 2210269, 6630807, 19892421]

約数ペア:

[(1, 19892421), (3, 6630807), (9, 2210269), (31, 641691), (37, 537633), (41, 485181), (47, 423243), (93, 213897), (111, 179211), (123, 161727), (141, 141081), (279, 71299), (333, 59737), (369, 53909), (423, 47027), (1147, 17343), (1271, 15651), (1457, 13653), (1517, 13113), (1739, 11439), (1927, 10323), (3441, 5781), (3813, 5217), (4371, 4551)]