21127808

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12697}}^1$

素因数の和:12724

約数の個数: 32

約数和(自身を含む): 45331860

約数和(自身を除く): 24204052

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12697, 25394, 50788, 101576, 165061, 203152, 330122, 406304, 660244, 812608, 1320488, 1625216, 2640976, 5281952, 10563904, 21127808]

約数ペア:

[(1, 21127808), (2, 10563904), (4, 5281952), (8, 2640976), (13, 1625216), (16, 1320488), (26, 812608), (32, 660244), (52, 406304), (64, 330122), (104, 203152), (128, 165061), (208, 101576), (416, 50788), (832, 25394), (1664, 12697)]