21597524

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:816

約数の個数: 36

約数和(自身を含む): 41934816

約数和(自身を除く): 20337292

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 169, 172, 338, 559, 676, 743, 1118, 1486, 2236, 2972, 7267, 9659, 14534, 19318, 29068, 31949, 38636, 63898, 125567, 127796, 251134, 415337, 502268, 830674, 1661348, 5399381, 10798762, 21597524]

約数ペア:

[(1, 21597524), (2, 10798762), (4, 5399381), (13, 1661348), (26, 830674), (43, 502268), (52, 415337), (86, 251134), (169, 127796), (172, 125567), (338, 63898), (559, 38636), (676, 31949), (743, 29068), (1118, 19318), (1486, 14534), (2236, 9659), (2972, 7267)]