20766420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2683}}^1$

素因数の和:2741

約数の個数: 72

約数和(自身を含む): 64480416

約数和(自身を除く): 43713996

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, 2683, 3870, 5366, 7740, 8049, 10732, 13415, 16098, 24147, 26830, 32196, 40245, 48294, 53660, 80490, 96588, 115369, 120735, 160980, 230738, 241470, 346107, 461476, 482940, 576845, 692214, 1038321, 1153690, 1384428, 1730535, 2076642, 2307380, 3461070, 4153284, 5191605, 6922140, 10383210, 20766420]

約数ペア:

[(1, 20766420), (2, 10383210), (3, 6922140), (4, 5191605), (5, 4153284), (6, 3461070), (9, 2307380), (10, 2076642), (12, 1730535), (15, 1384428), (18, 1153690), (20, 1038321), (30, 692214), (36, 576845), (43, 482940), (45, 461476), (60, 346107), (86, 241470), (90, 230738), (129, 160980), (172, 120735), (180, 115369), (215, 96588), (258, 80490), (387, 53660), (430, 48294), (516, 40245), (645, 32196), (774, 26830), (860, 24147), (1290, 16098), (1548, 13415), (1935, 10732), (2580, 8049), (2683, 7740), (3870, 5366)]