20564415

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 18833985

約数列:

[1, 3, 5, 9, 15, 23, 27, 37, 45, 69, 111, 115, 135, 179, 185, 207, 333, 345, 537, 555, 621, 851, 895, 999, 1035, 1611, 1665, 2553, 2685, 3105, 4117, 4255, 4833, 4995, 6623, 7659, 8055, 12351, 12765, 19869, 20585, 22977, 24165, 33115, 37053, 38295, 59607, 61755, 99345, 111159, 114885, 152329, 178821, 185265, 298035, 456987, 555795, 761645, 894105, 1370961, 2284935, 4112883, 6854805, 20564415]

約数ペア:

[(1, 20564415), (3, 6854805), (5, 4112883), (9, 2284935), (15, 1370961), (23, 894105), (27, 761645), (37, 555795), (45, 456987), (69, 298035), (111, 185265), (115, 178821), (135, 152329), (179, 114885), (185, 111159), (207, 99345), (333, 61755), (345, 59607), (537, 38295), (555, 37053), (621, 33115), (851, 24165), (895, 22977), (999, 20585), (1035, 19869), (1611, 12765), (1665, 12351), (2553, 8055), (2685, 7659), (3105, 6623), (4117, 4995), (4255, 4833)]