80736980

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{41617}}^1$

素因数の和:41723

約数の個数: 24

約数和(自身を含む): 171299688

約数和(自身を除く): 90562708

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 41617, 83234, 166468, 208085, 416170, 832340, 4036849, 8073698, 16147396, 20184245, 40368490, 80736980]

約数ペア:

[(1, 80736980), (2, 40368490), (4, 20184245), (5, 16147396), (10, 8073698), (20, 4036849), (97, 832340), (194, 416170), (388, 208085), (485, 166468), (970, 83234), (1940, 41617)]