19015876

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:516

約数の個数: 36

約数和(自身を含む): 37035180

約数和(自身を除く): 18019304

約数列:

[1, 2, 4, 11, 22, 44, 101, 121, 202, 242, 389, 404, 484, 778, 1111, 1556, 2222, 4279, 4444, 8558, 12221, 17116, 24442, 39289, 47069, 48884, 78578, 94138, 157156, 188276, 432179, 864358, 1728716, 4753969, 9507938, 19015876]

約数ペア:

[(1, 19015876), (2, 9507938), (4, 4753969), (11, 1728716), (22, 864358), (44, 432179), (101, 188276), (121, 157156), (202, 94138), (242, 78578), (389, 48884), (404, 47069), (484, 39289), (778, 24442), (1111, 17116), (1556, 12221), (2222, 8558), (4279, 4444)]