21047254

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:264

約数の個数: 32

約数和(自身を含む): 34292160

約数和(自身を除く): 13244906

約数列:

[1, 2, 23, 46, 53, 89, 97, 106, 178, 194, 1219, 2047, 2231, 2438, 4094, 4462, 4717, 5141, 8633, 9434, 10282, 17266, 108491, 118243, 198559, 216982, 236486, 397118, 457549, 915098, 10523627, 21047254]

約数ペア:

[(1, 21047254), (2, 10523627), (23, 915098), (46, 457549), (53, 397118), (89, 236486), (97, 216982), (106, 198559), (178, 118243), (194, 108491), (1219, 17266), (2047, 10282), (2231, 9434), (2438, 8633), (4094, 5141), (4462, 4717)]