21000000616

素因数分解:

$2^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{3504673}}^1$

素因数の和:3504793

約数の個数: 32

約数和(自身を含む): 45420575040

約数和(自身を除く): 24420574424

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 107, 214, 428, 749, 856, 1498, 2996, 5992, 3504673, 7009346, 14018692, 24532711, 28037384, 49065422, 98130844, 196261688, 375000011, 750000022, 1500000044, 2625000077, 3000000088, 5250000154, 10500000308, 21000000616]

約数ペア:

[(1, 21000000616), (2, 10500000308), (4, 5250000154), (7, 3000000088), (8, 2625000077), (14, 1500000044), (28, 750000022), (56, 375000011), (107, 196261688), (214, 98130844), (428, 49065422), (749, 28037384), (856, 24532711), (1498, 14018692), (2996, 7009346), (5992, 3504673)]