1989180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 6198192

約数和(自身を除く): 4209012

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, 257, 258, 387, 430, 514, 516, 645, 771, 774, 860, 1028, 1285, 1290, 1542, 1548, 1935, 2313, 2570, 2580, 3084, 3855, 3870, 4626, 5140, 7710, 7740, 9252, 11051, 11565, 15420, 22102, 23130, 33153, 44204, 46260, 55255, 66306, 99459, 110510, 132612, 165765, 198918, 221020, 331530, 397836, 497295, 663060, 994590, 1989180]

約数ペア:

[(1, 1989180), (2, 994590), (3, 663060), (4, 497295), (5, 397836), (6, 331530), (9, 221020), (10, 198918), (12, 165765), (15, 132612), (18, 110510), (20, 99459), (30, 66306), (36, 55255), (43, 46260), (45, 44204), (60, 33153), (86, 23130), (90, 22102), (129, 15420), (172, 11565), (180, 11051), (215, 9252), (257, 7740), (258, 7710), (387, 5140), (430, 4626), (514, 3870), (516, 3855), (645, 3084), (771, 2580), (774, 2570), (860, 2313), (1028, 1935), (1285, 1548), (1290, 1542)]