20000988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 58298240

約数和(自身を除く): 38297252

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 139, 252, 278, 417, 556, 571, 834, 973, 1142, 1251, 1668, 1713, 1946, 2284, 2502, 2919, 3426, 3892, 3997, 5004, 5139, 5838, 6852, 7994, 8757, 10278, 11676, 11991, 15988, 17514, 20556, 23982, 35028, 35973, 47964, 71946, 79369, 143892, 158738, 238107, 317476, 476214, 555583, 714321, 952428, 1111166, 1428642, 1666749, 2222332, 2857284, 3333498, 5000247, 6666996, 10000494, 20000988]

約数ペア:

[(1, 20000988), (2, 10000494), (3, 6666996), (4, 5000247), (6, 3333498), (7, 2857284), (9, 2222332), (12, 1666749), (14, 1428642), (18, 1111166), (21, 952428), (28, 714321), (36, 555583), (42, 476214), (63, 317476), (84, 238107), (126, 158738), (139, 143892), (252, 79369), (278, 71946), (417, 47964), (556, 35973), (571, 35028), (834, 23982), (973, 20556), (1142, 17514), (1251, 15988), (1668, 11991), (1713, 11676), (1946, 10278), (2284, 8757), (2502, 7994), (2919, 6852), (3426, 5838), (3892, 5139), (3997, 5004)]