81269748

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{619}}^1$

素因数の和:1157

約数の個数: 72

約数和(自身を含む): 235609920

約数和(自身を除く): 154340172

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 521, 619, 1042, 1238, 1563, 1857, 2084, 2476, 3126, 3647, 3714, 4333, 4689, 5571, 6252, 7294, 7428, 8666, 9378, 10941, 11142, 12999, 14588, 17332, 18756, 21882, 22284, 25998, 32823, 38997, 43764, 51996, 65646, 77994, 131292, 155988, 322499, 644998, 967497, 1289996, 1934994, 2257493, 2902491, 3869988, 4514986, 5804982, 6772479, 9029972, 11609964, 13544958, 20317437, 27089916, 40634874, 81269748]

約数ペア:

[(1, 81269748), (2, 40634874), (3, 27089916), (4, 20317437), (6, 13544958), (7, 11609964), (9, 9029972), (12, 6772479), (14, 5804982), (18, 4514986), (21, 3869988), (28, 2902491), (36, 2257493), (42, 1934994), (63, 1289996), (84, 967497), (126, 644998), (252, 322499), (521, 155988), (619, 131292), (1042, 77994), (1238, 65646), (1563, 51996), (1857, 43764), (2084, 38997), (2476, 32823), (3126, 25998), (3647, 22284), (3714, 21882), (4333, 18756), (4689, 17332), (5571, 14588), (6252, 12999), (7294, 11142), (7428, 10941), (8666, 9378)]