12889180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20789}}^1$

素因数の和:20829

約数の個数: 24

約数和(自身を含む): 27941760

約数和(自身を除く): 15052580

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 20789, 41578, 83156, 103945, 207890, 415780, 644459, 1288918, 2577836, 3222295, 6444590, 12889180]

約数ペア:

[(1, 12889180), (2, 6444590), (4, 3222295), (5, 2577836), (10, 1288918), (20, 644459), (31, 415780), (62, 207890), (124, 103945), (155, 83156), (310, 41578), (620, 20789)]