20948560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8447}}^1$

素因数の和:8491

約数の個数: 40

約数和(自身を含む): 50282496

約数和(自身を除く): 29333936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8447, 16894, 33788, 42235, 67576, 84470, 135152, 168940, 261857, 337880, 523714, 675760, 1047428, 1309285, 2094856, 2618570, 4189712, 5237140, 10474280, 20948560]

約数ペア:

[(1, 20948560), (2, 10474280), (4, 5237140), (5, 4189712), (8, 2618570), (10, 2094856), (16, 1309285), (20, 1047428), (31, 675760), (40, 523714), (62, 337880), (80, 261857), (124, 168940), (155, 135152), (248, 84470), (310, 67576), (496, 42235), (620, 33788), (1240, 16894), (2480, 8447)]