21691388159

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^2\times {\mathrm{8713}}^1$

素因数の和:8844

約数の個数: 36

約数和(自身を含む): 26905137264

約数和(自身を除く): 5213749105

約数列:

[1, 7, 23, 47, 49, 161, 329, 1081, 1127, 2209, 2303, 7567, 8713, 15463, 50807, 52969, 60991, 108241, 200399, 355649, 409511, 426937, 1402793, 2489543, 2866577, 9418753, 9819551, 19247017, 20066039, 65931271, 134729119, 442681391, 461518897, 943103833, 3098769737, 21691388159]

約数ペア:

[(1, 21691388159), (7, 3098769737), (23, 943103833), (47, 461518897), (49, 442681391), (161, 134729119), (329, 65931271), (1081, 20066039), (1127, 19247017), (2209, 9819551), (2303, 9418753), (7567, 2866577), (8713, 2489543), (15463, 1402793), (50807, 426937), (52969, 409511), (60991, 355649), (108241, 200399)]