21972357

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{443}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 35804160

約数和(自身を除く): 13831803

約数列:

[1, 3, 9, 11, 27, 33, 99, 167, 297, 443, 501, 1329, 1503, 1837, 3987, 4509, 4873, 5511, 11961, 14619, 16533, 43857, 49599, 73981, 131571, 221943, 665829, 813791, 1997487, 2441373, 7324119, 21972357]

約数ペア:

[(1, 21972357), (3, 7324119), (9, 2441373), (11, 1997487), (27, 813791), (33, 665829), (99, 221943), (167, 131571), (297, 73981), (443, 49599), (501, 43857), (1329, 16533), (1503, 14619), (1837, 11961), (3987, 5511), (4509, 4873)]