21419548

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{997}}^1$

素因数の和:1173

約数の個数: 24

約数和(自身を含む): 38730384

約数和(自身を除く): 17310836

約数列:

[1, 2, 4, 41, 82, 131, 164, 262, 524, 997, 1994, 3988, 5371, 10742, 21484, 40877, 81754, 130607, 163508, 261214, 522428, 5354887, 10709774, 21419548]

約数ペア:

[(1, 21419548), (2, 10709774), (4, 5354887), (41, 522428), (82, 261214), (131, 163508), (164, 130607), (262, 81754), (524, 40877), (997, 21484), (1994, 10742), (3988, 5371)]