20748468

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^3\times {\mathrm{787}}^1$

素因数の和:833

約数の個数: 48

約数和(自身を含む): 52512320

約数和(自身を除く): 31763852

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 787, 1014, 1574, 2028, 2197, 2361, 3148, 4394, 4722, 6591, 8788, 9444, 10231, 13182, 20462, 26364, 30693, 40924, 61386, 122772, 133003, 266006, 399009, 532012, 798018, 1596036, 1729039, 3458078, 5187117, 6916156, 10374234, 20748468]

約数ペア:

[(1, 20748468), (2, 10374234), (3, 6916156), (4, 5187117), (6, 3458078), (12, 1729039), (13, 1596036), (26, 798018), (39, 532012), (52, 399009), (78, 266006), (156, 133003), (169, 122772), (338, 61386), (507, 40924), (676, 30693), (787, 26364), (1014, 20462), (1574, 13182), (2028, 10231), (2197, 9444), (2361, 8788), (3148, 6591), (4394, 4722)]