20605840

素因数分解:

$2^4\times 5^1\times {\mathrm{307}}^1\times {\mathrm{839}}^1$

素因数の和:1159

約数の個数: 40

約数和(自身を含む): 48121920

約数和(自身を除く): 27516080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 307, 614, 839, 1228, 1535, 1678, 2456, 3070, 3356, 4195, 4912, 6140, 6712, 8390, 12280, 13424, 16780, 24560, 33560, 67120, 257573, 515146, 1030292, 1287865, 2060584, 2575730, 4121168, 5151460, 10302920, 20605840]

約数ペア:

[(1, 20605840), (2, 10302920), (4, 5151460), (5, 4121168), (8, 2575730), (10, 2060584), (16, 1287865), (20, 1030292), (40, 515146), (80, 257573), (307, 67120), (614, 33560), (839, 24560), (1228, 16780), (1535, 13424), (1678, 12280), (2456, 8390), (3070, 6712), (3356, 6140), (4195, 4912)]