220812560

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{31013}}^1$

素因数の和:31115

約数の個数: 40

約数和(自身を含む): 519174360

約数和(自身を除く): 298361800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 31013, 62026, 124052, 155065, 248104, 310130, 496208, 620260, 1240520, 2481040, 2760157, 5520314, 11040628, 13800785, 22081256, 27601570, 44162512, 55203140, 110406280, 220812560]

約数ペア:

[(1, 220812560), (2, 110406280), (4, 55203140), (5, 44162512), (8, 27601570), (10, 22081256), (16, 13800785), (20, 11040628), (40, 5520314), (80, 2760157), (89, 2481040), (178, 1240520), (356, 620260), (445, 496208), (712, 310130), (890, 248104), (1424, 155065), (1780, 124052), (3560, 62026), (7120, 31013)]