20871480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24847}}^1$

素因数の和:24868

約数の個数: 64

約数和(自身を含む): 71562240

約数和(自身を除く): 50690760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24847, 49694, 74541, 99388, 124235, 149082, 173929, 198776, 248470, 298164, 347858, 372705, 496940, 521787, 596328, 695716, 745410, 869645, 993880, 1043574, 1391432, 1490820, 1739290, 2087148, 2608935, 2981640, 3478580, 4174296, 5217870, 6957160, 10435740, 20871480]

約数ペア:

[(1, 20871480), (2, 10435740), (3, 6957160), (4, 5217870), (5, 4174296), (6, 3478580), (7, 2981640), (8, 2608935), (10, 2087148), (12, 1739290), (14, 1490820), (15, 1391432), (20, 1043574), (21, 993880), (24, 869645), (28, 745410), (30, 695716), (35, 596328), (40, 521787), (42, 496940), (56, 372705), (60, 347858), (70, 298164), (84, 248470), (105, 198776), (120, 173929), (140, 149082), (168, 124235), (210, 99388), (280, 74541), (420, 49694), (840, 24847)]