20851376

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14321}}^1$

素因数の和:14349

約数の個数: 40

約数和(自身を含む): 49725984

約数和(自身を除く): 28874608

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14321, 28642, 57284, 100247, 114568, 186173, 200494, 229136, 372346, 400988, 744692, 801976, 1303211, 1489384, 1603952, 2606422, 2978768, 5212844, 10425688, 20851376]

約数ペア:

[(1, 20851376), (2, 10425688), (4, 5212844), (7, 2978768), (8, 2606422), (13, 1603952), (14, 1489384), (16, 1303211), (26, 801976), (28, 744692), (52, 400988), (56, 372346), (91, 229136), (104, 200494), (112, 186173), (182, 114568), (208, 100247), (364, 57284), (728, 28642), (1456, 14321)]