20751465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{769}}^1$

素因数の和:1041

約数の個数: 32

約数和(自身を含む): 38142720

約数和(自身を除く): 17391255

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 257, 769, 771, 1285, 1799, 2307, 3845, 3855, 5383, 5397, 8995, 11535, 16149, 26915, 26985, 80745, 197633, 592899, 988165, 1383431, 2964495, 4150293, 6917155, 20751465]

約数ペア:

[(1, 20751465), (3, 6917155), (5, 4150293), (7, 2964495), (15, 1383431), (21, 988165), (35, 592899), (105, 197633), (257, 80745), (769, 26985), (771, 26915), (1285, 16149), (1799, 11535), (2307, 8995), (3845, 5397), (3855, 5383)]