21109977

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1201}}^1$

素因数の和:1251

約数の個数: 40

約数和(自身を含む): 37233152

約数和(自身を除く): 16123175

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1201, 1953, 2511, 3603, 5859, 8407, 10809, 17577, 25221, 32427, 37231, 75663, 97281, 111693, 226989, 260617, 335079, 680967, 781851, 1005237, 2345553, 3015711, 7036659, 21109977]

約数ペア:

[(1, 21109977), (3, 7036659), (7, 3015711), (9, 2345553), (21, 1005237), (27, 781851), (31, 680967), (63, 335079), (81, 260617), (93, 226989), (189, 111693), (217, 97281), (279, 75663), (567, 37231), (651, 32427), (837, 25221), (1201, 17577), (1953, 10809), (2511, 8407), (3603, 5859)]