21075782

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 19258330

約数列:

[1, 2, 7, 13, 14, 26, 49, 71, 91, 98, 142, 182, 233, 466, 497, 637, 923, 994, 1274, 1631, 1846, 3029, 3262, 3479, 6058, 6461, 6958, 11417, 12922, 16543, 21203, 22834, 33086, 42406, 45227, 90454, 115801, 148421, 215059, 231602, 296842, 430118, 810607, 1505413, 1621214, 3010826, 10537891, 21075782]

約数ペア:

[(1, 21075782), (2, 10537891), (7, 3010826), (13, 1621214), (14, 1505413), (26, 810607), (49, 430118), (71, 296842), (91, 231602), (98, 215059), (142, 148421), (182, 115801), (233, 90454), (466, 45227), (497, 42406), (637, 33086), (923, 22834), (994, 21203), (1274, 16543), (1631, 12922), (1846, 11417), (3029, 6958), (3262, 6461), (3479, 6058)]