21287032

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1039}}^1$

素因数の和:1255

約数の個数: 32

約数和(自身を含む): 43243200

約数和(自身を除く): 21956168

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 1039, 1576, 2078, 2561, 4156, 5122, 8312, 10244, 13507, 20488, 27014, 54028, 108056, 204683, 409366, 818732, 1637464, 2660879, 5321758, 10643516, 21287032]

約数ペア:

[(1, 21287032), (2, 10643516), (4, 5321758), (8, 2660879), (13, 1637464), (26, 818732), (52, 409366), (104, 204683), (197, 108056), (394, 54028), (788, 27014), (1039, 20488), (1576, 13507), (2078, 10244), (2561, 8312), (4156, 5122)]