28398573

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 51363840

約数和(自身を除く): 22965267

約数列:

[1, 3, 7, 9, 21, 27, 31, 37, 63, 93, 111, 131, 189, 217, 259, 279, 333, 393, 651, 777, 837, 917, 999, 1147, 1179, 1953, 2331, 2751, 3441, 3537, 4061, 4847, 5859, 6993, 8029, 8253, 10323, 12183, 14541, 24087, 24759, 28427, 30969, 33929, 36549, 43623, 72261, 85281, 101787, 109647, 130869, 150257, 216783, 255843, 305361, 450771, 767529, 916083, 1051799, 1352313, 3155397, 4056939, 9466191, 28398573]

約数ペア:

[(1, 28398573), (3, 9466191), (7, 4056939), (9, 3155397), (21, 1352313), (27, 1051799), (31, 916083), (37, 767529), (63, 450771), (93, 305361), (111, 255843), (131, 216783), (189, 150257), (217, 130869), (259, 109647), (279, 101787), (333, 85281), (393, 72261), (651, 43623), (777, 36549), (837, 33929), (917, 30969), (999, 28427), (1147, 24759), (1179, 24087), (1953, 14541), (2331, 12183), (2751, 10323), (3441, 8253), (3537, 8029), (4061, 6993), (4847, 5859)]