389675769

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{18427}}^1$

素因数の和:18509

約数の個数: 32

約数和(自身を含む): 636871680

約数和(自身を除く): 247195911

約数列:

[1, 3, 7, 19, 21, 53, 57, 133, 159, 371, 399, 1007, 1113, 3021, 7049, 18427, 21147, 55281, 128989, 350113, 386967, 976631, 1050339, 2450791, 2929893, 6836417, 7352373, 18555989, 20509251, 55667967, 129891923, 389675769]

約数ペア:

[(1, 389675769), (3, 129891923), (7, 55667967), (19, 20509251), (21, 18555989), (53, 7352373), (57, 6836417), (133, 2929893), (159, 2450791), (371, 1050339), (399, 976631), (1007, 386967), (1113, 350113), (3021, 128989), (7049, 55281), (18427, 21147)]