20989752

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1213}}^1$

素因数の和:1332

約数の個数: 64

約数和(自身を含む): 60602880

約数和(自身を除く): 39613128

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 103, 168, 206, 309, 412, 618, 721, 824, 1213, 1236, 1442, 2163, 2426, 2472, 2884, 3639, 4326, 4852, 5768, 7278, 8491, 8652, 9704, 14556, 16982, 17304, 25473, 29112, 33964, 50946, 67928, 101892, 124939, 203784, 249878, 374817, 499756, 749634, 874573, 999512, 1499268, 1749146, 2623719, 2998536, 3498292, 5247438, 6996584, 10494876, 20989752]

約数ペア:

[(1, 20989752), (2, 10494876), (3, 6996584), (4, 5247438), (6, 3498292), (7, 2998536), (8, 2623719), (12, 1749146), (14, 1499268), (21, 999512), (24, 874573), (28, 749634), (42, 499756), (56, 374817), (84, 249878), (103, 203784), (168, 124939), (206, 101892), (309, 67928), (412, 50946), (618, 33964), (721, 29112), (824, 25473), (1213, 17304), (1236, 16982), (1442, 14556), (2163, 9704), (2426, 8652), (2472, 8491), (2884, 7278), (3639, 5768), (4326, 4852)]