20687990580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2672867}}^1$

素因数の和:2672925

約数の個数: 72

約数和(自身を含む): 64212980832

約数和(自身を除く): 43524990252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 2672867, 5345734, 8018601, 10691468, 13364335, 16037202, 24055803, 26728670, 32074404, 40093005, 48111606, 53457340, 80186010, 96223212, 114933281, 120279015, 160372020, 229866562, 240558030, 344799843, 459733124, 481116060, 574666405, 689599686, 1034399529, 1149332810, 1379199372, 1723999215, 2068799058, 2298665620, 3447998430, 4137598116, 5171997645, 6895996860, 10343995290, 20687990580]

約数ペア:

[(1, 20687990580), (2, 10343995290), (3, 6895996860), (4, 5171997645), (5, 4137598116), (6, 3447998430), (9, 2298665620), (10, 2068799058), (12, 1723999215), (15, 1379199372), (18, 1149332810), (20, 1034399529), (30, 689599686), (36, 574666405), (43, 481116060), (45, 459733124), (60, 344799843), (86, 240558030), (90, 229866562), (129, 160372020), (172, 120279015), (180, 114933281), (215, 96223212), (258, 80186010), (387, 53457340), (430, 48111606), (516, 40093005), (645, 32074404), (774, 26728670), (860, 24055803), (1290, 16037202), (1548, 13364335), (1935, 10691468), (2580, 8018601), (3870, 5345734), (7740, 2672867)]