21189272

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2791}}^1$

素因数の和:2883

約数の個数: 32

約数和(自身を含む): 43387680

約数和(自身を除く): 22198408

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2791, 3796, 5582, 7592, 11164, 22328, 36283, 72566, 145132, 203743, 290264, 407486, 814972, 1629944, 2648659, 5297318, 10594636, 21189272]

約数ペア:

[(1, 21189272), (2, 10594636), (4, 5297318), (8, 2648659), (13, 1629944), (26, 814972), (52, 407486), (73, 290264), (104, 203743), (146, 145132), (292, 72566), (584, 36283), (949, 22328), (1898, 11164), (2791, 7592), (3796, 5582)]