85707890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 167961600

約数和(自身を除く): 82253710

約数列:

[1, 2, 5, 10, 23, 46, 53, 79, 89, 106, 115, 158, 178, 230, 265, 395, 445, 530, 790, 890, 1219, 1817, 2047, 2438, 3634, 4094, 4187, 4717, 6095, 7031, 8374, 9085, 9434, 10235, 12190, 14062, 18170, 20470, 20935, 23585, 35155, 41870, 47170, 70310, 96301, 108491, 161713, 192602, 216982, 323426, 372643, 481505, 542455, 745286, 808565, 963010, 1084910, 1617130, 1863215, 3726430, 8570789, 17141578, 42853945, 85707890]

約数ペア:

[(1, 85707890), (2, 42853945), (5, 17141578), (10, 8570789), (23, 3726430), (46, 1863215), (53, 1617130), (79, 1084910), (89, 963010), (106, 808565), (115, 745286), (158, 542455), (178, 481505), (230, 372643), (265, 323426), (395, 216982), (445, 192602), (530, 161713), (790, 108491), (890, 96301), (1219, 70310), (1817, 47170), (2047, 41870), (2438, 35155), (3634, 23585), (4094, 20935), (4187, 20470), (4717, 18170), (6095, 14062), (7031, 12190), (8374, 10235), (9085, 9434)]