20680772

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1889}}^1$

素因数の和:1940

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25042108

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 34, 46, 68, 92, 119, 161, 238, 322, 391, 476, 644, 782, 1564, 1889, 2737, 3778, 5474, 7556, 10948, 13223, 26446, 32113, 43447, 52892, 64226, 86894, 128452, 173788, 224791, 304129, 449582, 608258, 738599, 899164, 1216516, 1477198, 2954396, 5170193, 10340386, 20680772]

約数ペア:

[(1, 20680772), (2, 10340386), (4, 5170193), (7, 2954396), (14, 1477198), (17, 1216516), (23, 899164), (28, 738599), (34, 608258), (46, 449582), (68, 304129), (92, 224791), (119, 173788), (161, 128452), (238, 86894), (322, 64226), (391, 52892), (476, 43447), (644, 32113), (782, 26446), (1564, 13223), (1889, 10948), (2737, 7556), (3778, 5474)]