18870120

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:136

約数の個数: 192

約数和(自身を含む): 66718080

約数和(自身を除く): 47847960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 43, 45, 46, 53, 60, 69, 72, 86, 90, 92, 106, 115, 120, 129, 138, 159, 172, 180, 184, 207, 212, 215, 230, 258, 265, 276, 318, 344, 345, 360, 387, 414, 424, 430, 460, 477, 516, 530, 552, 636, 645, 690, 774, 795, 828, 860, 920, 954, 989, 1032, 1035, 1060, 1219, 1272, 1290, 1380, 1548, 1590, 1656, 1720, 1908, 1935, 1978, 2070, 2120, 2279, 2385, 2438, 2580, 2760, 2967, 3096, 3180, 3657, 3816, 3870, 3956, 4140, 4558, 4770, 4876, 4945, 5160, 5934, 6095, 6360, 6837, 7314, 7740, 7912, 8280, 8901, 9116, 9540, 9752, 9890, 10971, 11395, 11868, 12190, 13674, 14628, 14835, 15480, 17802, 18232, 18285, 19080, 19780, 20511, 21942, 22790, 23736, 24380, 27348, 29256, 29670, 34185, 35604, 36570, 39560, 41022, 43884, 44505, 45580, 48760, 52417, 54696, 54855, 59340, 68370, 71208, 73140, 82044, 87768, 89010, 91160, 102555, 104834, 109710, 118680, 136740, 146280, 157251, 164088, 178020, 205110, 209668, 219420, 262085, 273480, 314502, 356040, 410220, 419336, 438840, 471753, 524170, 629004, 786255, 820440, 943506, 1048340, 1258008, 1572510, 1887012, 2096680, 2358765, 3145020, 3774024, 4717530, 6290040, 9435060, 18870120]

約数ペア:

[(1, 18870120), (2, 9435060), (3, 6290040), (4, 4717530), (5, 3774024), (6, 3145020), (8, 2358765), (9, 2096680), (10, 1887012), (12, 1572510), (15, 1258008), (18, 1048340), (20, 943506), (23, 820440), (24, 786255), (30, 629004), (36, 524170), (40, 471753), (43, 438840), (45, 419336), (46, 410220), (53, 356040), (60, 314502), (69, 273480), (72, 262085), (86, 219420), (90, 209668), (92, 205110), (106, 178020), (115, 164088), (120, 157251), (129, 146280), (138, 136740), (159, 118680), (172, 109710), (180, 104834), (184, 102555), (207, 91160), (212, 89010), (215, 87768), (230, 82044), (258, 73140), (265, 71208), (276, 68370), (318, 59340), (344, 54855), (345, 54696), (360, 52417), (387, 48760), (414, 45580), (424, 44505), (430, 43884), (460, 41022), (477, 39560), (516, 36570), (530, 35604), (552, 34185), (636, 29670), (645, 29256), (690, 27348), (774, 24380), (795, 23736), (828, 22790), (860, 21942), (920, 20511), (954, 19780), (989, 19080), (1032, 18285), (1035, 18232), (1060, 17802), (1219, 15480), (1272, 14835), (1290, 14628), (1380, 13674), (1548, 12190), (1590, 11868), (1656, 11395), (1720, 10971), (1908, 9890), (1935, 9752), (1978, 9540), (2070, 9116), (2120, 8901), (2279, 8280), (2385, 7912), (2438, 7740), (2580, 7314), (2760, 6837), (2967, 6360), (3096, 6095), (3180, 5934), (3657, 5160), (3816, 4945), (3870, 4876), (3956, 4770), (4140, 4558)]