21472143

素因数分解:

$3^1\times 7^4\times {\mathrm{11}}^1\times {\mathrm{271}}^1$

素因数の和:313

約数の個数: 40

約数和(自身を含む): 36569856

約数和(自身を除く): 15097713

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 271, 343, 539, 813, 1029, 1617, 1897, 2401, 2981, 3773, 5691, 7203, 8943, 11319, 13279, 20867, 26411, 39837, 62601, 79233, 92953, 146069, 278859, 438207, 650671, 1022483, 1952013, 3067449, 7157381, 21472143]

約数ペア:

[(1, 21472143), (3, 7157381), (7, 3067449), (11, 1952013), (21, 1022483), (33, 650671), (49, 438207), (77, 278859), (147, 146069), (231, 92953), (271, 79233), (343, 62601), (539, 39837), (813, 26411), (1029, 20867), (1617, 13279), (1897, 11319), (2401, 8943), (2981, 7203), (3773, 5691)]