28757988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{821}}^1$

素因数の和:977

約数の個数: 72

約数和(自身を含む): 83778240

約数和(自身を除く): 55020252

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, 821, 834, 973, 1251, 1642, 1668, 1946, 2463, 2502, 2919, 3284, 3892, 4926, 5004, 5747, 5838, 7389, 8757, 9852, 11494, 11676, 14778, 17241, 17514, 22988, 29556, 34482, 35028, 51723, 68964, 103446, 114119, 206892, 228238, 342357, 456476, 684714, 798833, 1027071, 1369428, 1597666, 2054142, 2396499, 3195332, 4108284, 4792998, 7189497, 9585996, 14378994, 28757988]

約数ペア:

[(1, 28757988), (2, 14378994), (3, 9585996), (4, 7189497), (6, 4792998), (7, 4108284), (9, 3195332), (12, 2396499), (14, 2054142), (18, 1597666), (21, 1369428), (28, 1027071), (36, 798833), (42, 684714), (63, 456476), (84, 342357), (126, 228238), (139, 206892), (252, 114119), (278, 103446), (417, 68964), (556, 51723), (821, 35028), (834, 34482), (973, 29556), (1251, 22988), (1642, 17514), (1668, 17241), (1946, 14778), (2463, 11676), (2502, 11494), (2919, 9852), (3284, 8757), (3892, 7389), (4926, 5838), (5004, 5747)]