21496818

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{11903}}^1$

素因数の和:11958

約数の個数: 32

約数和(自身を含む): 50282496

約数和(自身を除く): 28785678

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 129, 258, 301, 602, 903, 1806, 11903, 23806, 35709, 71418, 83321, 166642, 249963, 499926, 511829, 1023658, 1535487, 3070974, 3582803, 7165606, 10748409, 21496818]

約数ペア:

[(1, 21496818), (2, 10748409), (3, 7165606), (6, 3582803), (7, 3070974), (14, 1535487), (21, 1023658), (42, 511829), (43, 499926), (86, 249963), (129, 166642), (258, 83321), (301, 71418), (602, 35709), (903, 23806), (1806, 11903)]