21718440

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 192

約数和(自身を含む): 76602240

約数和(自身を除く): 54883800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 43, 45, 46, 60, 61, 69, 72, 86, 90, 92, 115, 120, 122, 129, 138, 172, 180, 183, 184, 207, 215, 230, 244, 258, 276, 305, 344, 345, 360, 366, 387, 414, 430, 460, 488, 516, 549, 552, 610, 645, 690, 732, 774, 828, 860, 915, 920, 989, 1032, 1035, 1098, 1220, 1290, 1380, 1403, 1464, 1548, 1656, 1720, 1830, 1935, 1978, 2070, 2196, 2440, 2580, 2623, 2745, 2760, 2806, 2967, 3096, 3660, 3870, 3956, 4140, 4209, 4392, 4945, 5160, 5246, 5490, 5612, 5934, 7015, 7320, 7740, 7869, 7912, 8280, 8418, 8901, 9890, 10492, 10980, 11224, 11868, 12627, 13115, 14030, 14835, 15480, 15738, 16836, 17802, 19780, 20984, 21045, 21960, 23607, 23736, 25254, 26230, 28060, 29670, 31476, 33672, 35604, 39345, 39560, 42090, 44505, 47214, 50508, 52460, 56120, 59340, 60329, 62952, 63135, 71208, 78690, 84180, 89010, 94428, 101016, 104920, 118035, 118680, 120658, 126270, 157380, 168360, 178020, 180987, 188856, 236070, 241316, 252540, 301645, 314760, 356040, 361974, 472140, 482632, 505080, 542961, 603290, 723948, 904935, 944280, 1085922, 1206580, 1447896, 1809870, 2171844, 2413160, 2714805, 3619740, 4343688, 5429610, 7239480, 10859220, 21718440]

約数ペア:

[(1, 21718440), (2, 10859220), (3, 7239480), (4, 5429610), (5, 4343688), (6, 3619740), (8, 2714805), (9, 2413160), (10, 2171844), (12, 1809870), (15, 1447896), (18, 1206580), (20, 1085922), (23, 944280), (24, 904935), (30, 723948), (36, 603290), (40, 542961), (43, 505080), (45, 482632), (46, 472140), (60, 361974), (61, 356040), (69, 314760), (72, 301645), (86, 252540), (90, 241316), (92, 236070), (115, 188856), (120, 180987), (122, 178020), (129, 168360), (138, 157380), (172, 126270), (180, 120658), (183, 118680), (184, 118035), (207, 104920), (215, 101016), (230, 94428), (244, 89010), (258, 84180), (276, 78690), (305, 71208), (344, 63135), (345, 62952), (360, 60329), (366, 59340), (387, 56120), (414, 52460), (430, 50508), (460, 47214), (488, 44505), (516, 42090), (549, 39560), (552, 39345), (610, 35604), (645, 33672), (690, 31476), (732, 29670), (774, 28060), (828, 26230), (860, 25254), (915, 23736), (920, 23607), (989, 21960), (1032, 21045), (1035, 20984), (1098, 19780), (1220, 17802), (1290, 16836), (1380, 15738), (1403, 15480), (1464, 14835), (1548, 14030), (1656, 13115), (1720, 12627), (1830, 11868), (1935, 11224), (1978, 10980), (2070, 10492), (2196, 9890), (2440, 8901), (2580, 8418), (2623, 8280), (2745, 7912), (2760, 7869), (2806, 7740), (2967, 7320), (3096, 7015), (3660, 5934), (3870, 5612), (3956, 5490), (4140, 5246), (4209, 5160), (4392, 4945)]