19406948

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:524

約数の個数: 36

約数和(自身を含む): 37794876

約数和(自身を除く): 18387928

約数列:

[1, 2, 4, 11, 22, 44, 101, 121, 202, 242, 397, 404, 484, 794, 1111, 1588, 2222, 4367, 4444, 8734, 12221, 17468, 24442, 40097, 48037, 48884, 80194, 96074, 160388, 192148, 441067, 882134, 1764268, 4851737, 9703474, 19406948]

約数ペア:

[(1, 19406948), (2, 9703474), (4, 4851737), (11, 1764268), (22, 882134), (44, 441067), (101, 192148), (121, 160388), (202, 96074), (242, 80194), (397, 48884), (404, 48037), (484, 40097), (794, 24442), (1111, 17468), (1588, 12221), (2222, 8734), (4367, 4444)]