21089736

素因数分解:

$2^3\times 3^2\times {\mathrm{499}}^1\times {\mathrm{587}}^1$

素因数の和:1098

約数の個数: 48

約数和(自身を含む): 57330000

約数和(自身を除く): 36240264

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 499, 587, 998, 1174, 1497, 1761, 1996, 2348, 2994, 3522, 3992, 4491, 4696, 5283, 5988, 7044, 8982, 10566, 11976, 14088, 17964, 21132, 35928, 42264, 292913, 585826, 878739, 1171652, 1757478, 2343304, 2636217, 3514956, 5272434, 7029912, 10544868, 21089736]

約数ペア:

[(1, 21089736), (2, 10544868), (3, 7029912), (4, 5272434), (6, 3514956), (8, 2636217), (9, 2343304), (12, 1757478), (18, 1171652), (24, 878739), (36, 585826), (72, 292913), (499, 42264), (587, 35928), (998, 21132), (1174, 17964), (1497, 14088), (1761, 11976), (1996, 10566), (2348, 8982), (2994, 7044), (3522, 5988), (3992, 5283), (4491, 4696)]