21378942

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 50236368

約数和(自身を除く): 28857426

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 211, 234, 422, 433, 633, 866, 1266, 1299, 1899, 2598, 2743, 3798, 3897, 5486, 5629, 7794, 8229, 11258, 16458, 16887, 24687, 33774, 49374, 50661, 91363, 101322, 182726, 274089, 548178, 822267, 1187719, 1644534, 2375438, 3563157, 7126314, 10689471, 21378942]

約数ペア:

[(1, 21378942), (2, 10689471), (3, 7126314), (6, 3563157), (9, 2375438), (13, 1644534), (18, 1187719), (26, 822267), (39, 548178), (78, 274089), (117, 182726), (211, 101322), (234, 91363), (422, 50661), (433, 49374), (633, 33774), (866, 24687), (1266, 16887), (1299, 16458), (1899, 11258), (2598, 8229), (2743, 7794), (3798, 5629), (3897, 5486)]