21291476

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{433}}^1\times {\mathrm{647}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 39372480

約数和(自身を除く): 18081004

約数列:

[1, 2, 4, 19, 38, 76, 433, 647, 866, 1294, 1732, 2588, 8227, 12293, 16454, 24586, 32908, 49172, 280151, 560302, 1120604, 5322869, 10645738, 21291476]

約数ペア:

[(1, 21291476), (2, 10645738), (4, 5322869), (19, 1120604), (38, 560302), (76, 280151), (433, 49172), (647, 32908), (866, 24586), (1294, 16454), (1732, 12293), (2588, 8227)]