21957285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{12301}}^1$

素因数の和:12333

約数の個数: 32

約数和(自身を含む): 42515712

約数和(自身を除く): 20558427

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 12301, 36903, 61505, 86107, 184515, 209117, 258321, 430535, 627351, 1045585, 1291605, 1463819, 3136755, 4391457, 7319095, 21957285]

約数ペア:

[(1, 21957285), (3, 7319095), (5, 4391457), (7, 3136755), (15, 1463819), (17, 1291605), (21, 1045585), (35, 627351), (51, 430535), (85, 258321), (105, 209117), (119, 184515), (255, 86107), (357, 61505), (595, 36903), (1785, 12301)]