1285752620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{769}}^1\times {\mathrm{2039}}^1$

素因数の和:2858

約数の個数: 48

約数和(自身を含む): 2770891200

約数和(自身を除く): 1485138580

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 769, 820, 1538, 2039, 3076, 3845, 4078, 7690, 8156, 10195, 15380, 20390, 31529, 40780, 63058, 83599, 126116, 157645, 167198, 315290, 334396, 417995, 630580, 835990, 1567991, 1671980, 3135982, 6271964, 7839955, 15679910, 31359820, 64287631, 128575262, 257150524, 321438155, 642876310, 1285752620]

約数ペア:

[(1, 1285752620), (2, 642876310), (4, 321438155), (5, 257150524), (10, 128575262), (20, 64287631), (41, 31359820), (82, 15679910), (164, 7839955), (205, 6271964), (410, 3135982), (769, 1671980), (820, 1567991), (1538, 835990), (2039, 630580), (3076, 417995), (3845, 334396), (4078, 315290), (7690, 167198), (8156, 157645), (10195, 126116), (15380, 83599), (20390, 63058), (31529, 40780)]