20945988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1933}}^1$

素因数の和:1993

約数の個数: 72

約数和(自身を含む): 61949888

約数和(自身を除く): 41003900

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 63, 84, 86, 126, 129, 172, 252, 258, 301, 387, 516, 602, 774, 903, 1204, 1548, 1806, 1933, 2709, 3612, 3866, 5418, 5799, 7732, 10836, 11598, 13531, 17397, 23196, 27062, 34794, 40593, 54124, 69588, 81186, 83119, 121779, 162372, 166238, 243558, 249357, 332476, 487116, 498714, 581833, 748071, 997428, 1163666, 1496142, 1745499, 2327332, 2992284, 3490998, 5236497, 6981996, 10472994, 20945988]

約数ペア:

[(1, 20945988), (2, 10472994), (3, 6981996), (4, 5236497), (6, 3490998), (7, 2992284), (9, 2327332), (12, 1745499), (14, 1496142), (18, 1163666), (21, 997428), (28, 748071), (36, 581833), (42, 498714), (43, 487116), (63, 332476), (84, 249357), (86, 243558), (126, 166238), (129, 162372), (172, 121779), (252, 83119), (258, 81186), (301, 69588), (387, 54124), (516, 40593), (602, 34794), (774, 27062), (903, 23196), (1204, 17397), (1548, 13531), (1806, 11598), (1933, 10836), (2709, 7732), (3612, 5799), (3866, 5418)]