81591160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:377

約数の個数: 128

約数和(自身を含む): 226592640

約数和(自身を除く): 145001480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 61, 68, 70, 85, 119, 122, 136, 140, 170, 238, 244, 280, 281, 305, 340, 427, 476, 488, 562, 595, 610, 680, 854, 952, 1037, 1124, 1190, 1220, 1405, 1708, 1967, 2074, 2135, 2248, 2380, 2440, 2810, 3416, 3934, 4148, 4270, 4760, 4777, 5185, 5620, 7259, 7868, 8296, 8540, 9554, 9835, 10370, 11240, 14518, 15736, 17080, 17141, 19108, 19670, 20740, 23885, 29036, 33439, 34282, 36295, 38216, 39340, 41480, 47770, 58072, 66878, 68564, 72590, 78680, 85705, 95540, 119987, 133756, 137128, 145180, 167195, 171410, 191080, 239974, 267512, 290360, 291397, 334390, 342820, 479948, 582794, 599935, 668780, 685640, 959896, 1165588, 1199870, 1337560, 1456985, 2039779, 2331176, 2399740, 2913970, 4079558, 4799480, 5827940, 8159116, 10198895, 11655880, 16318232, 20397790, 40795580, 81591160]

約数ペア:

[(1, 81591160), (2, 40795580), (4, 20397790), (5, 16318232), (7, 11655880), (8, 10198895), (10, 8159116), (14, 5827940), (17, 4799480), (20, 4079558), (28, 2913970), (34, 2399740), (35, 2331176), (40, 2039779), (56, 1456985), (61, 1337560), (68, 1199870), (70, 1165588), (85, 959896), (119, 685640), (122, 668780), (136, 599935), (140, 582794), (170, 479948), (238, 342820), (244, 334390), (280, 291397), (281, 290360), (305, 267512), (340, 239974), (427, 191080), (476, 171410), (488, 167195), (562, 145180), (595, 137128), (610, 133756), (680, 119987), (854, 95540), (952, 85705), (1037, 78680), (1124, 72590), (1190, 68564), (1220, 66878), (1405, 58072), (1708, 47770), (1967, 41480), (2074, 39340), (2135, 38216), (2248, 36295), (2380, 34282), (2440, 33439), (2810, 29036), (3416, 23885), (3934, 20740), (4148, 19670), (4270, 19108), (4760, 17141), (4777, 17080), (5185, 15736), (5620, 14518), (7259, 11240), (7868, 10370), (8296, 9835), (8540, 9554)]