19845135

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 37756800

約数和(自身を除く): 17911665

約数列:

[1, 3, 5, 9, 15, 27, 29, 37, 45, 87, 111, 135, 137, 145, 185, 261, 333, 411, 435, 555, 685, 783, 999, 1073, 1233, 1305, 1665, 2055, 3219, 3699, 3915, 3973, 4995, 5069, 5365, 6165, 9657, 11919, 15207, 16095, 18495, 19865, 25345, 28971, 35757, 45621, 48285, 59595, 76035, 107271, 136863, 144855, 147001, 178785, 228105, 441003, 536355, 684315, 735005, 1323009, 2205015, 3969027, 6615045, 19845135]

約数ペア:

[(1, 19845135), (3, 6615045), (5, 3969027), (9, 2205015), (15, 1323009), (27, 735005), (29, 684315), (37, 536355), (45, 441003), (87, 228105), (111, 178785), (135, 147001), (137, 144855), (145, 136863), (185, 107271), (261, 76035), (333, 59595), (411, 48285), (435, 45621), (555, 35757), (685, 28971), (783, 25345), (999, 19865), (1073, 18495), (1233, 16095), (1305, 15207), (1665, 11919), (2055, 9657), (3219, 6165), (3699, 5365), (3915, 5069), (3973, 4995)]