19997838

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3691}}^1$

素因数の和:3749

約数の個数: 48

約数和(自身を含む): 50683776

約数和(自身を除く): 30685938

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 3691, 5418, 7382, 11073, 22146, 25837, 33219, 51674, 66438, 77511, 155022, 158713, 232533, 317426, 465066, 476139, 952278, 1110991, 1428417, 2221982, 2856834, 3332973, 6665946, 9998919, 19997838]

約数ペア:

[(1, 19997838), (2, 9998919), (3, 6665946), (6, 3332973), (7, 2856834), (9, 2221982), (14, 1428417), (18, 1110991), (21, 952278), (42, 476139), (43, 465066), (63, 317426), (86, 232533), (126, 158713), (129, 155022), (258, 77511), (301, 66438), (387, 51674), (602, 33219), (774, 25837), (903, 22146), (1806, 11073), (2709, 7382), (3691, 5418)]