21780106243

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^2\times {\mathrm{7883}}^1$

素因数の和:8175

約数の個数: 24

約数和(自身を含む): 26176898304

約数和(自身を除く): 4396792061

約数列:

[1, 7, 23, 131, 161, 917, 3013, 7883, 17161, 21091, 55181, 120127, 181309, 394703, 1032673, 1269163, 2762921, 7228711, 23751479, 135280163, 166260353, 946961141, 3111443749, 21780106243]

約数ペア:

[(1, 21780106243), (7, 3111443749), (23, 946961141), (131, 166260353), (161, 135280163), (917, 23751479), (3013, 7228711), (7883, 2762921), (17161, 1269163), (21091, 1032673), (55181, 394703), (120127, 181309)]