21261688

素因数分解:

$2^3\times 7^2\times {\mathrm{73}}^1\times {\mathrm{743}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 47072880

約数和(自身を除く): 25811192

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 73, 98, 146, 196, 292, 392, 511, 584, 743, 1022, 1486, 2044, 2972, 3577, 4088, 5201, 5944, 7154, 10402, 14308, 20804, 28616, 36407, 41608, 54239, 72814, 108478, 145628, 216956, 291256, 379673, 433912, 759346, 1518692, 2657711, 3037384, 5315422, 10630844, 21261688]

約数ペア:

[(1, 21261688), (2, 10630844), (4, 5315422), (7, 3037384), (8, 2657711), (14, 1518692), (28, 759346), (49, 433912), (56, 379673), (73, 291256), (98, 216956), (146, 145628), (196, 108478), (292, 72814), (392, 54239), (511, 41608), (584, 36407), (743, 28616), (1022, 20804), (1486, 14308), (2044, 10402), (2972, 7154), (3577, 5944), (4088, 5201)]