21000901271

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1\times {\mathrm{72623}}^1$

素因数の和:73118

約数の個数: 16

約数和(自身を含む): 24285465600

約数和(自身を除く): 3284564329

約数列:

[1, 7, 109, 379, 763, 2653, 41311, 72623, 289177, 508361, 7915907, 27524117, 55411349, 192668819, 3000128753, 21000901271]

約数ペア:

[(1, 21000901271), (7, 3000128753), (109, 192668819), (379, 55411349), (763, 27524117), (2653, 7915907), (41311, 508361), (72623, 289177)]