20320580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{839}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 49109760

約数和(自身を除く): 28789180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 839, 865, 1211, 1678, 1730, 2422, 3356, 3460, 4195, 4844, 5873, 6055, 8390, 11746, 12110, 16780, 23492, 24220, 29365, 58730, 117460, 145147, 290294, 580588, 725735, 1016029, 1451470, 2032058, 2902940, 4064116, 5080145, 10160290, 20320580]

約数ペア:

[(1, 20320580), (2, 10160290), (4, 5080145), (5, 4064116), (7, 2902940), (10, 2032058), (14, 1451470), (20, 1016029), (28, 725735), (35, 580588), (70, 290294), (140, 145147), (173, 117460), (346, 58730), (692, 29365), (839, 24220), (865, 23492), (1211, 16780), (1678, 12110), (1730, 11746), (2422, 8390), (3356, 6055), (3460, 5873), (4195, 4844)]