20117640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:271

約数の個数: 128

約数和(自身を含む): 65007360

約数和(自身を除く): 44889720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 37, 40, 46, 60, 69, 74, 92, 111, 115, 120, 138, 148, 184, 185, 197, 222, 230, 276, 296, 345, 370, 394, 444, 460, 552, 555, 591, 690, 740, 788, 851, 888, 920, 985, 1110, 1182, 1380, 1480, 1576, 1702, 1970, 2220, 2364, 2553, 2760, 2955, 3404, 3940, 4255, 4440, 4531, 4728, 5106, 5910, 6808, 7289, 7880, 8510, 9062, 10212, 11820, 12765, 13593, 14578, 17020, 18124, 20424, 21867, 22655, 23640, 25530, 27186, 29156, 34040, 36248, 36445, 43734, 45310, 51060, 54372, 58312, 67965, 72890, 87468, 90620, 102120, 108744, 109335, 135930, 145780, 167647, 174936, 181240, 218670, 271860, 291560, 335294, 437340, 502941, 543720, 670588, 838235, 874680, 1005882, 1341176, 1676470, 2011764, 2514705, 3352940, 4023528, 5029410, 6705880, 10058820, 20117640]

約数ペア:

[(1, 20117640), (2, 10058820), (3, 6705880), (4, 5029410), (5, 4023528), (6, 3352940), (8, 2514705), (10, 2011764), (12, 1676470), (15, 1341176), (20, 1005882), (23, 874680), (24, 838235), (30, 670588), (37, 543720), (40, 502941), (46, 437340), (60, 335294), (69, 291560), (74, 271860), (92, 218670), (111, 181240), (115, 174936), (120, 167647), (138, 145780), (148, 135930), (184, 109335), (185, 108744), (197, 102120), (222, 90620), (230, 87468), (276, 72890), (296, 67965), (345, 58312), (370, 54372), (394, 51060), (444, 45310), (460, 43734), (552, 36445), (555, 36248), (591, 34040), (690, 29156), (740, 27186), (788, 25530), (851, 23640), (888, 22655), (920, 21867), (985, 20424), (1110, 18124), (1182, 17020), (1380, 14578), (1480, 13593), (1576, 12765), (1702, 11820), (1970, 10212), (2220, 9062), (2364, 8510), (2553, 7880), (2760, 7289), (2955, 6808), (3404, 5910), (3940, 5106), (4255, 4728), (4440, 4531)]