16987995

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 32832000

約数和(自身を除く): 15844005

約数列:

[1, 3, 5, 9, 15, 19, 27, 37, 45, 57, 95, 111, 135, 171, 179, 185, 285, 333, 513, 537, 555, 703, 855, 895, 999, 1611, 1665, 2109, 2565, 2685, 3401, 3515, 4833, 4995, 6327, 6623, 8055, 10203, 10545, 17005, 18981, 19869, 24165, 30609, 31635, 33115, 51015, 59607, 91827, 94905, 99345, 125837, 153045, 178821, 298035, 377511, 459135, 629185, 894105, 1132533, 1887555, 3397599, 5662665, 16987995]

約数ペア:

[(1, 16987995), (3, 5662665), (5, 3397599), (9, 1887555), (15, 1132533), (19, 894105), (27, 629185), (37, 459135), (45, 377511), (57, 298035), (95, 178821), (111, 153045), (135, 125837), (171, 99345), (179, 94905), (185, 91827), (285, 59607), (333, 51015), (513, 33115), (537, 31635), (555, 30609), (703, 24165), (855, 19869), (895, 18981), (999, 17005), (1611, 10545), (1665, 10203), (2109, 8055), (2565, 6623), (2685, 6327), (3401, 4995), (3515, 4833)]