20803500004

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1381}}^1\times {\mathrm{10151}}^1$

素因数の和:11596

約数の個数: 48

約数和(自身を含む): 42426913536

約数和(自身を除く): 21623413532

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1381, 1484, 2762, 5524, 9667, 10151, 19334, 20302, 38668, 40604, 71057, 73193, 142114, 146386, 284228, 292772, 512351, 538003, 1024702, 1076006, 2049404, 2152012, 3766021, 7532042, 14018531, 15064084, 28037062, 56074124, 98129717, 196259434, 392518868, 742982143, 1485964286, 2971928572, 5200875001, 10401750002, 20803500004]

約数ペア:

[(1, 20803500004), (2, 10401750002), (4, 5200875001), (7, 2971928572), (14, 1485964286), (28, 742982143), (53, 392518868), (106, 196259434), (212, 98129717), (371, 56074124), (742, 28037062), (1381, 15064084), (1484, 14018531), (2762, 7532042), (5524, 3766021), (9667, 2152012), (10151, 2049404), (19334, 1076006), (20302, 1024702), (38668, 538003), (40604, 512351), (71057, 292772), (73193, 284228), (142114, 146386)]