21920206

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3847}}^1$

素因数の和:3904

約数の個数: 32

約数和(自身を含む): 42112512

約数和(自身を除く): 20192306

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 154, 259, 407, 518, 814, 2849, 3847, 5698, 7694, 26929, 42317, 53858, 84634, 142339, 284678, 296219, 592438, 996373, 1565729, 1992746, 3131458, 10960103, 21920206]

約数ペア:

[(1, 21920206), (2, 10960103), (7, 3131458), (11, 1992746), (14, 1565729), (22, 996373), (37, 592438), (74, 296219), (77, 284678), (154, 142339), (259, 84634), (407, 53858), (518, 42317), (814, 26929), (2849, 7694), (3847, 5698)]