21006902

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:636

約数の個数: 32

約数和(自身を含む): 37632000

約数和(自身を除く): 16625098

約数列:

[1, 2, 7, 14, 31, 62, 97, 194, 217, 434, 499, 679, 998, 1358, 3007, 3493, 6014, 6986, 15469, 21049, 30938, 42098, 48403, 96806, 108283, 216566, 338821, 677642, 1500493, 3000986, 10503451, 21006902]

約数ペア:

[(1, 21006902), (2, 10503451), (7, 3000986), (14, 1500493), (31, 677642), (62, 338821), (97, 216566), (194, 108283), (217, 96806), (434, 48403), (499, 42098), (679, 30938), (998, 21049), (1358, 15469), (3007, 6986), (3493, 6014)]