21177938

素因数分解:

$2^1\times {\mathrm{163}}^1\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:721

約数の個数: 16

約数和(自身を含む): 32235840

約数和(自身を除く): 11057902

約数列:

[1, 2, 163, 167, 326, 334, 389, 778, 27221, 54442, 63407, 64963, 126814, 129926, 10588969, 21177938]

約数ペア:

[(1, 21177938), (2, 10588969), (163, 129926), (167, 126814), (326, 64963), (334, 63407), (389, 54442), (778, 27221)]