21308872

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15761}}^1$

素因数の和:15793

約数の個数: 24

約数和(自身を含む): 43266690

約数和(自身を除く): 21957818

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15761, 31522, 63044, 126088, 204893, 409786, 819572, 1639144, 2663609, 5327218, 10654436, 21308872]

約数ペア:

[(1, 21308872), (2, 10654436), (4, 5327218), (8, 2663609), (13, 1639144), (26, 819572), (52, 409786), (104, 204893), (169, 126088), (338, 63044), (676, 31522), (1352, 15761)]