20641968

素因数分解:

$2^4\times 3^2\times {\mathrm{29}}^1\times {\mathrm{4943}}^1$

素因数の和:4986

約数の個数: 60

約数和(自身を含む): 59772960

約数和(自身を除く): 39130992

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 29, 36, 48, 58, 72, 87, 116, 144, 174, 232, 261, 348, 464, 522, 696, 1044, 1392, 2088, 4176, 4943, 9886, 14829, 19772, 29658, 39544, 44487, 59316, 79088, 88974, 118632, 143347, 177948, 237264, 286694, 355896, 430041, 573388, 711792, 860082, 1146776, 1290123, 1720164, 2293552, 2580246, 3440328, 5160492, 6880656, 10320984, 20641968]

約数ペア:

[(1, 20641968), (2, 10320984), (3, 6880656), (4, 5160492), (6, 3440328), (8, 2580246), (9, 2293552), (12, 1720164), (16, 1290123), (18, 1146776), (24, 860082), (29, 711792), (36, 573388), (48, 430041), (58, 355896), (72, 286694), (87, 237264), (116, 177948), (144, 143347), (174, 118632), (232, 88974), (261, 79088), (348, 59316), (464, 44487), (522, 39544), (696, 29658), (1044, 19772), (1392, 14829), (2088, 9886), (4176, 4943)]