21955878

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{643}}^1$

素因数の和:929

約数の個数: 48

約数和(自身を含む): 54652416

約数和(自身を除く): 32696538

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 271, 542, 643, 813, 1286, 1626, 1897, 1929, 2439, 3794, 3858, 4501, 4878, 5691, 5787, 9002, 11382, 11574, 13503, 17073, 27006, 34146, 40509, 81018, 174253, 348506, 522759, 1045518, 1219771, 1568277, 2439542, 3136554, 3659313, 7318626, 10977939, 21955878]

約数ペア:

[(1, 21955878), (2, 10977939), (3, 7318626), (6, 3659313), (7, 3136554), (9, 2439542), (14, 1568277), (18, 1219771), (21, 1045518), (42, 522759), (63, 348506), (126, 174253), (271, 81018), (542, 40509), (643, 34146), (813, 27006), (1286, 17073), (1626, 13503), (1897, 11574), (1929, 11382), (2439, 9002), (3794, 5787), (3858, 5691), (4501, 4878)]