397247980

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^2\times {\mathrm{2111}}^1$

素因数の和:2314

約数の個数: 36

約数和(自身を含む): 843308928

約数和(自身を除く): 446060948

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 2111, 4222, 8444, 9409, 10555, 18818, 21110, 37636, 42220, 47045, 94090, 188180, 204767, 409534, 819068, 1023835, 2047670, 4095340, 19862399, 39724798, 79449596, 99311995, 198623990, 397247980]

約数ペア:

[(1, 397247980), (2, 198623990), (4, 99311995), (5, 79449596), (10, 39724798), (20, 19862399), (97, 4095340), (194, 2047670), (388, 1023835), (485, 819068), (970, 409534), (1940, 204767), (2111, 188180), (4222, 94090), (8444, 47045), (9409, 42220), (10555, 37636), (18818, 21110)]