21803440

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{607}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 50889600

約数和(自身を除く): 29086160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 607, 898, 1214, 1796, 2245, 2428, 3035, 3592, 4490, 4856, 6070, 7184, 8980, 9712, 12140, 17960, 24280, 35920, 48560, 272543, 545086, 1090172, 1362715, 2180344, 2725430, 4360688, 5450860, 10901720, 21803440]

約数ペア:

[(1, 21803440), (2, 10901720), (4, 5450860), (5, 4360688), (8, 2725430), (10, 2180344), (16, 1362715), (20, 1090172), (40, 545086), (80, 272543), (449, 48560), (607, 35920), (898, 24280), (1214, 17960), (1796, 12140), (2245, 9712), (2428, 8980), (3035, 7184), (3592, 6070), (4490, 4856)]