31781988

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:486

約数の個数: 108

約数和(自身を含む): 95855760

約数和(自身を除く): 64073772

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 49, 63, 84, 86, 98, 126, 129, 147, 172, 196, 252, 258, 294, 301, 387, 419, 441, 516, 588, 602, 774, 838, 882, 903, 1204, 1257, 1548, 1676, 1764, 1806, 2107, 2514, 2709, 2933, 3612, 3771, 4214, 5028, 5418, 5866, 6321, 7542, 8428, 8799, 10836, 11732, 12642, 15084, 17598, 18017, 18963, 20531, 25284, 26397, 35196, 36034, 37926, 41062, 52794, 54051, 61593, 72068, 75852, 82124, 105588, 108102, 123186, 126119, 162153, 184779, 216204, 246372, 252238, 324306, 369558, 378357, 504476, 648612, 739116, 756714, 882833, 1135071, 1513428, 1765666, 2270142, 2648499, 3531332, 4540284, 5296998, 7945497, 10593996, 15890994, 31781988]

約数ペア:

[(1, 31781988), (2, 15890994), (3, 10593996), (4, 7945497), (6, 5296998), (7, 4540284), (9, 3531332), (12, 2648499), (14, 2270142), (18, 1765666), (21, 1513428), (28, 1135071), (36, 882833), (42, 756714), (43, 739116), (49, 648612), (63, 504476), (84, 378357), (86, 369558), (98, 324306), (126, 252238), (129, 246372), (147, 216204), (172, 184779), (196, 162153), (252, 126119), (258, 123186), (294, 108102), (301, 105588), (387, 82124), (419, 75852), (441, 72068), (516, 61593), (588, 54051), (602, 52794), (774, 41062), (838, 37926), (882, 36034), (903, 35196), (1204, 26397), (1257, 25284), (1548, 20531), (1676, 18963), (1764, 18017), (1806, 17598), (2107, 15084), (2514, 12642), (2709, 11732), (2933, 10836), (3612, 8799), (3771, 8428), (4214, 7542), (5028, 6321), (5418, 5866)]