81061280

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:382

約数の個数: 96

約数和(自身を含む): 201761280

約数和(自身を除く): 120700000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 59, 62, 80, 118, 124, 155, 160, 236, 248, 277, 295, 310, 472, 496, 554, 590, 620, 944, 992, 1108, 1180, 1240, 1385, 1829, 1888, 2216, 2360, 2480, 2770, 3658, 4432, 4720, 4960, 5540, 7316, 8587, 8864, 9145, 9440, 11080, 14632, 16343, 17174, 18290, 22160, 29264, 32686, 34348, 36580, 42935, 44320, 58528, 65372, 68696, 73160, 81715, 85870, 130744, 137392, 146320, 163430, 171740, 261488, 274784, 292640, 326860, 343480, 506633, 522976, 653720, 686960, 1013266, 1307440, 1373920, 2026532, 2533165, 2614880, 4053064, 5066330, 8106128, 10132660, 16212256, 20265320, 40530640, 81061280]

約数ペア:

[(1, 81061280), (2, 40530640), (4, 20265320), (5, 16212256), (8, 10132660), (10, 8106128), (16, 5066330), (20, 4053064), (31, 2614880), (32, 2533165), (40, 2026532), (59, 1373920), (62, 1307440), (80, 1013266), (118, 686960), (124, 653720), (155, 522976), (160, 506633), (236, 343480), (248, 326860), (277, 292640), (295, 274784), (310, 261488), (472, 171740), (496, 163430), (554, 146320), (590, 137392), (620, 130744), (944, 85870), (992, 81715), (1108, 73160), (1180, 68696), (1240, 65372), (1385, 58528), (1829, 44320), (1888, 42935), (2216, 36580), (2360, 34348), (2480, 32686), (2770, 29264), (3658, 22160), (4432, 18290), (4720, 17174), (4960, 16343), (5540, 14632), (7316, 11080), (8587, 9440), (8864, 9145)]