20124719979

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{2347}}^1$

素因数の和:3025

約数の個数: 64

約数和(自身を含む): 33766118400

約数和(自身を除く): 13641398421

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 641, 1029, 1911, 1923, 2347, 4459, 4487, 7041, 8333, 13377, 13461, 16429, 24999, 30511, 31409, 49287, 58331, 91533, 94227, 115003, 174993, 213577, 219863, 345009, 408317, 640731, 659589, 805021, 1224951, 1495039, 1504427, 2415063, 2858219, 4485117, 4513281, 8574657, 10465273, 10530989, 19557551, 31395819, 31592967, 58672653, 73716923, 136902857, 221150769, 410708571, 516018461, 958319999, 1548055383, 2874959997, 6708239993, 20124719979]

約数ペア:

[(1, 20124719979), (3, 6708239993), (7, 2874959997), (13, 1548055383), (21, 958319999), (39, 516018461), (49, 410708571), (91, 221150769), (147, 136902857), (273, 73716923), (343, 58672653), (637, 31592967), (641, 31395819), (1029, 19557551), (1911, 10530989), (1923, 10465273), (2347, 8574657), (4459, 4513281), (4487, 4485117), (7041, 2858219), (8333, 2415063), (13377, 1504427), (13461, 1495039), (16429, 1224951), (24999, 805021), (30511, 659589), (31409, 640731), (49287, 408317), (58331, 345009), (91533, 219863), (94227, 213577), (115003, 174993)]