21240516

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{4349}}^1$

素因数の和:4404

約数の個数: 48

約数和(自身を含む): 55540800

約数和(自身を除く): 34300284

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 37, 44, 66, 74, 111, 132, 148, 222, 407, 444, 814, 1221, 1628, 2442, 4349, 4884, 8698, 13047, 17396, 26094, 47839, 52188, 95678, 143517, 160913, 191356, 287034, 321826, 482739, 574068, 643652, 965478, 1770043, 1930956, 3540086, 5310129, 7080172, 10620258, 21240516]

約数ペア:

[(1, 21240516), (2, 10620258), (3, 7080172), (4, 5310129), (6, 3540086), (11, 1930956), (12, 1770043), (22, 965478), (33, 643652), (37, 574068), (44, 482739), (66, 321826), (74, 287034), (111, 191356), (132, 160913), (148, 143517), (222, 95678), (407, 52188), (444, 47839), (814, 26094), (1221, 17396), (1628, 13047), (2442, 8698), (4349, 4884)]