289928702

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{383}}^1\times {\mathrm{389}}^1$

素因数の和:920

約数の個数: 32

約数和(自身を含む): 503193600

約数和(自身を除く): 213264898

約数列:

[1, 2, 7, 14, 139, 278, 383, 389, 766, 778, 973, 1946, 2681, 2723, 5362, 5446, 53237, 54071, 106474, 108142, 148987, 297974, 372659, 378497, 745318, 756994, 1042909, 2085818, 20709193, 41418386, 144964351, 289928702]

約数ペア:

[(1, 289928702), (2, 144964351), (7, 41418386), (14, 20709193), (139, 2085818), (278, 1042909), (383, 756994), (389, 745318), (766, 378497), (778, 372659), (973, 297974), (1946, 148987), (2681, 108142), (2723, 106474), (5362, 54071), (5446, 53237)]