20891199

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 34933248

約数和(自身を除く): 14042049

約数列:

[1, 3, 7, 21, 23, 37, 49, 69, 111, 147, 161, 167, 259, 483, 501, 777, 851, 1127, 1169, 1813, 2553, 3381, 3507, 3841, 5439, 5957, 6179, 8183, 11523, 17871, 18537, 24549, 26887, 41699, 43253, 80661, 125097, 129759, 142117, 188209, 302771, 426351, 564627, 908313, 994819, 2984457, 6963733, 20891199]

約数ペア:

[(1, 20891199), (3, 6963733), (7, 2984457), (21, 994819), (23, 908313), (37, 564627), (49, 426351), (69, 302771), (111, 188209), (147, 142117), (161, 129759), (167, 125097), (259, 80661), (483, 43253), (501, 41699), (777, 26887), (851, 24549), (1127, 18537), (1169, 17871), (1813, 11523), (2553, 8183), (3381, 6179), (3507, 5957), (3841, 5439)]