21180200258

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{607823}}^1$

素因数の和:607982

約数の個数: 32

約数和(自身を含む): 38511728640

約数和(自身を除く): 17331528382

約数列:

[1, 2, 7, 14, 19, 38, 131, 133, 262, 266, 917, 1834, 2489, 4978, 17423, 34846, 607823, 1215646, 4254761, 8509522, 11548637, 23097274, 79624813, 80840459, 159249626, 161680918, 557373691, 1114747382, 1512871447, 3025742894, 10590100129, 21180200258]

約数ペア:

[(1, 21180200258), (2, 10590100129), (7, 3025742894), (14, 1512871447), (19, 1114747382), (38, 557373691), (131, 161680918), (133, 159249626), (262, 80840459), (266, 79624813), (917, 23097274), (1834, 11548637), (2489, 8509522), (4978, 4254761), (17423, 1215646), (34846, 607823)]