20511000

素因数分解:

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

素因数の和:123

約数の個数: 192

約数和(自身を含む): 72277920

約数和(自身を除く): 51766920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 43, 45, 50, 53, 60, 72, 75, 86, 90, 100, 106, 120, 125, 129, 150, 159, 172, 180, 200, 212, 215, 225, 250, 258, 265, 300, 318, 344, 360, 375, 387, 424, 430, 450, 477, 500, 516, 530, 600, 636, 645, 750, 774, 795, 860, 900, 954, 1000, 1032, 1060, 1075, 1125, 1272, 1290, 1325, 1500, 1548, 1590, 1720, 1800, 1908, 1935, 2120, 2150, 2250, 2279, 2385, 2580, 2650, 3000, 3096, 3180, 3225, 3816, 3870, 3975, 4300, 4500, 4558, 4770, 5160, 5300, 5375, 6360, 6450, 6625, 6837, 7740, 7950, 8600, 9000, 9116, 9540, 9675, 10600, 10750, 11395, 11925, 12900, 13250, 13674, 15480, 15900, 16125, 18232, 19080, 19350, 19875, 20511, 21500, 22790, 23850, 25800, 26500, 27348, 31800, 32250, 34185, 38700, 39750, 41022, 43000, 45580, 47700, 48375, 53000, 54696, 56975, 59625, 64500, 68370, 77400, 79500, 82044, 91160, 95400, 96750, 102555, 113950, 119250, 129000, 136740, 159000, 164088, 170925, 193500, 205110, 227900, 238500, 273480, 284875, 341850, 387000, 410220, 455800, 477000, 512775, 569750, 683700, 820440, 854625, 1025550, 1139500, 1367400, 1709250, 2051100, 2279000, 2563875, 3418500, 4102200, 5127750, 6837000, 10255500, 20511000]

約数ペア:

[(1, 20511000), (2, 10255500), (3, 6837000), (4, 5127750), (5, 4102200), (6, 3418500), (8, 2563875), (9, 2279000), (10, 2051100), (12, 1709250), (15, 1367400), (18, 1139500), (20, 1025550), (24, 854625), (25, 820440), (30, 683700), (36, 569750), (40, 512775), (43, 477000), (45, 455800), (50, 410220), (53, 387000), (60, 341850), (72, 284875), (75, 273480), (86, 238500), (90, 227900), (100, 205110), (106, 193500), (120, 170925), (125, 164088), (129, 159000), (150, 136740), (159, 129000), (172, 119250), (180, 113950), (200, 102555), (212, 96750), (215, 95400), (225, 91160), (250, 82044), (258, 79500), (265, 77400), (300, 68370), (318, 64500), (344, 59625), (360, 56975), (375, 54696), (387, 53000), (424, 48375), (430, 47700), (450, 45580), (477, 43000), (500, 41022), (516, 39750), (530, 38700), (600, 34185), (636, 32250), (645, 31800), (750, 27348), (774, 26500), (795, 25800), (860, 23850), (900, 22790), (954, 21500), (1000, 20511), (1032, 19875), (1060, 19350), (1075, 19080), (1125, 18232), (1272, 16125), (1290, 15900), (1325, 15480), (1500, 13674), (1548, 13250), (1590, 12900), (1720, 11925), (1800, 11395), (1908, 10750), (1935, 10600), (2120, 9675), (2150, 9540), (2250, 9116), (2279, 9000), (2385, 8600), (2580, 7950), (2650, 7740), (3000, 6837), (3096, 6625), (3180, 6450), (3225, 6360), (3816, 5375), (3870, 5300), (3975, 5160), (4300, 4770), (4500, 4558)]