16782940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 36648864

約数和(自身を除く): 19865924

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 211, 388, 410, 422, 485, 820, 844, 970, 1055, 1940, 2110, 3977, 4220, 7954, 8651, 15908, 17302, 19885, 20467, 34604, 39770, 40934, 43255, 79540, 81868, 86510, 102335, 173020, 204670, 409340, 839147, 1678294, 3356588, 4195735, 8391470, 16782940]

約数ペア:

[(1, 16782940), (2, 8391470), (4, 4195735), (5, 3356588), (10, 1678294), (20, 839147), (41, 409340), (82, 204670), (97, 173020), (164, 102335), (194, 86510), (205, 81868), (211, 79540), (388, 43255), (410, 40934), (422, 39770), (485, 34604), (820, 20467), (844, 19885), (970, 17302), (1055, 15908), (1940, 8651), (2110, 7954), (3977, 4220)]