20745426

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:571

約数の個数: 48

約数和(自身を含む): 46116000

約数和(自身を除く): 25370574

約数列:

[1, 2, 3, 6, 13, 26, 39, 41, 78, 82, 123, 169, 246, 338, 499, 507, 533, 998, 1014, 1066, 1497, 1599, 2994, 3198, 6487, 6929, 12974, 13858, 19461, 20459, 20787, 38922, 40918, 41574, 61377, 84331, 122754, 168662, 252993, 265967, 505986, 531934, 797901, 1595802, 3457571, 6915142, 10372713, 20745426]

約数ペア:

[(1, 20745426), (2, 10372713), (3, 6915142), (6, 3457571), (13, 1595802), (26, 797901), (39, 531934), (41, 505986), (78, 265967), (82, 252993), (123, 168662), (169, 122754), (246, 84331), (338, 61377), (499, 41574), (507, 40918), (533, 38922), (998, 20787), (1014, 20459), (1066, 19461), (1497, 13858), (1599, 12974), (2994, 6929), (3198, 6487)]