81817680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1571}}^1$

素因数の和:1625

約数の個数: 160

約数和(自身を含む): 299409408

約数和(自身を除く): 217591728

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 105, 112, 120, 124, 140, 155, 168, 186, 210, 217, 240, 248, 280, 310, 336, 372, 420, 434, 465, 496, 560, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1488, 1571, 1680, 1736, 1860, 2170, 2480, 2604, 3142, 3255, 3472, 3720, 4340, 4713, 5208, 6284, 6510, 7440, 7855, 8680, 9426, 10416, 10997, 12568, 13020, 15710, 17360, 18852, 21994, 23565, 25136, 26040, 31420, 32991, 37704, 43988, 47130, 48701, 52080, 54985, 62840, 65982, 75408, 87976, 94260, 97402, 109970, 125680, 131964, 146103, 164955, 175952, 188520, 194804, 219940, 243505, 263928, 292206, 329910, 340907, 377040, 389608, 439880, 487010, 527856, 584412, 659820, 681814, 730515, 779216, 879760, 974020, 1022721, 1168824, 1319640, 1363628, 1461030, 1704535, 1948040, 2045442, 2337648, 2639280, 2727256, 2922060, 3409070, 3896080, 4090884, 5113605, 5454512, 5844120, 6818140, 8181768, 10227210, 11688240, 13636280, 16363536, 20454420, 27272560, 40908840, 81817680]

約数ペア:

[(1, 81817680), (2, 40908840), (3, 27272560), (4, 20454420), (5, 16363536), (6, 13636280), (7, 11688240), (8, 10227210), (10, 8181768), (12, 6818140), (14, 5844120), (15, 5454512), (16, 5113605), (20, 4090884), (21, 3896080), (24, 3409070), (28, 2922060), (30, 2727256), (31, 2639280), (35, 2337648), (40, 2045442), (42, 1948040), (48, 1704535), (56, 1461030), (60, 1363628), (62, 1319640), (70, 1168824), (80, 1022721), (84, 974020), (93, 879760), (105, 779216), (112, 730515), (120, 681814), (124, 659820), (140, 584412), (155, 527856), (168, 487010), (186, 439880), (210, 389608), (217, 377040), (240, 340907), (248, 329910), (280, 292206), (310, 263928), (336, 243505), (372, 219940), (420, 194804), (434, 188520), (465, 175952), (496, 164955), (560, 146103), (620, 131964), (651, 125680), (744, 109970), (840, 97402), (868, 94260), (930, 87976), (1085, 75408), (1240, 65982), (1302, 62840), (1488, 54985), (1571, 52080), (1680, 48701), (1736, 47130), (1860, 43988), (2170, 37704), (2480, 32991), (2604, 31420), (3142, 26040), (3255, 25136), (3472, 23565), (3720, 21994), (4340, 18852), (4713, 17360), (5208, 15710), (6284, 13020), (6510, 12568), (7440, 10997), (7855, 10416), (8680, 9426)]