21354179

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 28131840

約数和(自身を除く): 6777661

約数列:

[1, 7, 11, 29, 73, 77, 131, 203, 319, 511, 803, 917, 1441, 2117, 2233, 3799, 5621, 9563, 10087, 14819, 23287, 26593, 41789, 66941, 105193, 163009, 277327, 292523, 736351, 1941289, 3050597, 21354179]

約数ペア:

[(1, 21354179), (7, 3050597), (11, 1941289), (29, 736351), (73, 292523), (77, 277327), (131, 163009), (203, 105193), (319, 66941), (511, 41789), (803, 26593), (917, 23287), (1441, 14819), (2117, 10087), (2233, 9563), (3799, 5621)]