21701379

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 34078720

約数和(自身を除く): 12377341

約数列:

[1, 3, 7, 21, 79, 103, 127, 237, 309, 381, 553, 721, 889, 1659, 2163, 2667, 8137, 10033, 13081, 24411, 30099, 39243, 56959, 70231, 91567, 170877, 210693, 274701, 1033399, 3100197, 7233793, 21701379]

約数ペア:

[(1, 21701379), (3, 7233793), (7, 3100197), (21, 1033399), (79, 274701), (103, 210693), (127, 170877), (237, 91567), (309, 70231), (381, 56959), (553, 39243), (721, 30099), (889, 24411), (1659, 13081), (2163, 10033), (2667, 8137)]