21304821904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70081651}}^1$

素因数の和:70081678

約数の個数: 20

約数和(自身を含む): 43450624240

約数和(自身を除く): 22145802336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70081651, 140163302, 280326604, 560653208, 1121306416, 1331551369, 2663102738, 5326205476, 10652410952, 21304821904]

約数ペア:

[(1, 21304821904), (2, 10652410952), (4, 5326205476), (8, 2663102738), (16, 1331551369), (19, 1121306416), (38, 560653208), (76, 280326604), (152, 140163302), (304, 70081651)]