15721944820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{409639}}^1$

素因数の和:409768

約数の個数: 48

約数和(自身を含む): 35097955200

約数和(自身を除く): 19376010380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 190, 202, 380, 404, 505, 1010, 1919, 2020, 3838, 7676, 9595, 19190, 38380, 409639, 819278, 1638556, 2048195, 4096390, 7783141, 8192780, 15566282, 31132564, 38915705, 41373539, 77831410, 82747078, 155662820, 165494156, 206867695, 413735390, 786097241, 827470780, 1572194482, 3144388964, 3930486205, 7860972410, 15721944820]

約数ペア:

[(1, 15721944820), (2, 7860972410), (4, 3930486205), (5, 3144388964), (10, 1572194482), (19, 827470780), (20, 786097241), (38, 413735390), (76, 206867695), (95, 165494156), (101, 155662820), (190, 82747078), (202, 77831410), (380, 41373539), (404, 38915705), (505, 31132564), (1010, 15566282), (1919, 8192780), (2020, 7783141), (3838, 4096390), (7676, 2048195), (9595, 1638556), (19190, 819278), (38380, 409639)]