21408975

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:246

約数の個数: 96

約数和(自身を含む): 47139840

約数和(自身を除く): 25730865

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 25, 27, 35, 45, 63, 69, 75, 105, 115, 135, 161, 175, 189, 197, 207, 225, 315, 345, 483, 525, 575, 591, 621, 675, 805, 945, 985, 1035, 1379, 1449, 1575, 1725, 1773, 2415, 2955, 3105, 4025, 4137, 4347, 4531, 4725, 4925, 5175, 5319, 6895, 7245, 8865, 12075, 12411, 13593, 14775, 15525, 20685, 21735, 22655, 26595, 31717, 34475, 36225, 37233, 40779, 44325, 62055, 67965, 95151, 103425, 108675, 113275, 122337, 132975, 158585, 186165, 203895, 285453, 310275, 339825, 475755, 611685, 792925, 856359, 930825, 1019475, 1427265, 2378775, 3058425, 4281795, 7136325, 21408975]

約数ペア:

[(1, 21408975), (3, 7136325), (5, 4281795), (7, 3058425), (9, 2378775), (15, 1427265), (21, 1019475), (23, 930825), (25, 856359), (27, 792925), (35, 611685), (45, 475755), (63, 339825), (69, 310275), (75, 285453), (105, 203895), (115, 186165), (135, 158585), (161, 132975), (175, 122337), (189, 113275), (197, 108675), (207, 103425), (225, 95151), (315, 67965), (345, 62055), (483, 44325), (525, 40779), (575, 37233), (591, 36225), (621, 34475), (675, 31717), (805, 26595), (945, 22655), (985, 21735), (1035, 20685), (1379, 15525), (1449, 14775), (1575, 13593), (1725, 12411), (1773, 12075), (2415, 8865), (2955, 7245), (3105, 6895), (4025, 5319), (4137, 5175), (4347, 4925), (4531, 4725)]