21641464

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{16007}}^1$

素因数の和:16039

約数の個数: 24

約数和(自身を含む): 43941960

約数和(自身を除く): 22300496

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 16007, 32014, 64028, 128056, 208091, 416182, 832364, 1664728, 2705183, 5410366, 10820732, 21641464]

約数ペア:

[(1, 21641464), (2, 10820732), (4, 5410366), (8, 2705183), (13, 1664728), (26, 832364), (52, 416182), (104, 208091), (169, 128056), (338, 64028), (676, 32014), (1352, 16007)]