21331440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:128

約数の個数: 240

約数和(自身を含む): 80432352

約数和(自身を除く): 59100912

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 43, 45, 48, 52, 53, 60, 65, 72, 78, 80, 86, 90, 104, 106, 117, 120, 129, 130, 144, 156, 159, 172, 180, 195, 208, 212, 215, 234, 240, 258, 260, 265, 312, 318, 344, 360, 387, 390, 424, 430, 468, 477, 516, 520, 530, 559, 585, 624, 636, 645, 688, 689, 720, 774, 780, 795, 848, 860, 936, 954, 1032, 1040, 1060, 1118, 1170, 1272, 1290, 1378, 1548, 1560, 1590, 1677, 1720, 1872, 1908, 1935, 2064, 2067, 2120, 2236, 2279, 2340, 2385, 2544, 2580, 2756, 2795, 3096, 3120, 3180, 3354, 3440, 3445, 3816, 3870, 4134, 4240, 4472, 4558, 4680, 4770, 5031, 5160, 5512, 5590, 6192, 6201, 6360, 6708, 6837, 6890, 7632, 7740, 8268, 8385, 8944, 9116, 9360, 9540, 10062, 10320, 10335, 11024, 11180, 11395, 12402, 12720, 13416, 13674, 13780, 15480, 16536, 16770, 18232, 19080, 20124, 20511, 20670, 22360, 22790, 24804, 25155, 26832, 27348, 27560, 29627, 30960, 31005, 33072, 33540, 34185, 36464, 38160, 40248, 41022, 41340, 44720, 45580, 49608, 50310, 54696, 55120, 59254, 62010, 67080, 68370, 80496, 82044, 82680, 88881, 91160, 99216, 100620, 102555, 109392, 118508, 124020, 134160, 136740, 148135, 164088, 165360, 177762, 182320, 201240, 205110, 237016, 248040, 266643, 273480, 296270, 328176, 355524, 402480, 410220, 444405, 474032, 496080, 533286, 546960, 592540, 711048, 820440, 888810, 1066572, 1185080, 1333215, 1422096, 1640880, 1777620, 2133144, 2370160, 2666430, 3555240, 4266288, 5332860, 7110480, 10665720, 21331440]

約数ペア:

[(1, 21331440), (2, 10665720), (3, 7110480), (4, 5332860), (5, 4266288), (6, 3555240), (8, 2666430), (9, 2370160), (10, 2133144), (12, 1777620), (13, 1640880), (15, 1422096), (16, 1333215), (18, 1185080), (20, 1066572), (24, 888810), (26, 820440), (30, 711048), (36, 592540), (39, 546960), (40, 533286), (43, 496080), (45, 474032), (48, 444405), (52, 410220), (53, 402480), (60, 355524), (65, 328176), (72, 296270), (78, 273480), (80, 266643), (86, 248040), (90, 237016), (104, 205110), (106, 201240), (117, 182320), (120, 177762), (129, 165360), (130, 164088), (144, 148135), (156, 136740), (159, 134160), (172, 124020), (180, 118508), (195, 109392), (208, 102555), (212, 100620), (215, 99216), (234, 91160), (240, 88881), (258, 82680), (260, 82044), (265, 80496), (312, 68370), (318, 67080), (344, 62010), (360, 59254), (387, 55120), (390, 54696), (424, 50310), (430, 49608), (468, 45580), (477, 44720), (516, 41340), (520, 41022), (530, 40248), (559, 38160), (585, 36464), (624, 34185), (636, 33540), (645, 33072), (688, 31005), (689, 30960), (720, 29627), (774, 27560), (780, 27348), (795, 26832), (848, 25155), (860, 24804), (936, 22790), (954, 22360), (1032, 20670), (1040, 20511), (1060, 20124), (1118, 19080), (1170, 18232), (1272, 16770), (1290, 16536), (1378, 15480), (1548, 13780), (1560, 13674), (1590, 13416), (1677, 12720), (1720, 12402), (1872, 11395), (1908, 11180), (1935, 11024), (2064, 10335), (2067, 10320), (2120, 10062), (2236, 9540), (2279, 9360), (2340, 9116), (2385, 8944), (2544, 8385), (2580, 8268), (2756, 7740), (2795, 7632), (3096, 6890), (3120, 6837), (3180, 6708), (3354, 6360), (3440, 6201), (3445, 6192), (3816, 5590), (3870, 5512), (4134, 5160), (4240, 5031), (4472, 4770), (4558, 4680)]