21193952

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{3919}}^1$

素因数の和:3955

約数の個数: 36

約数和(自身を含む): 45193680

約数和(自身を除く): 23999728

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 3919, 5408, 7838, 15676, 31352, 50947, 62704, 101894, 125408, 203788, 407576, 662311, 815152, 1324622, 1630304, 2649244, 5298488, 10596976, 21193952]

約数ペア:

[(1, 21193952), (2, 10596976), (4, 5298488), (8, 2649244), (13, 1630304), (16, 1324622), (26, 815152), (32, 662311), (52, 407576), (104, 203788), (169, 125408), (208, 101894), (338, 62704), (416, 50947), (676, 31352), (1352, 15676), (2704, 7838), (3919, 5408)]