20684650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{523}}^1$

素因数の和:655

約数の個数: 48

約数和(自身を含む): 44443584

約数和(自身を除く): 23758934

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 113, 175, 226, 350, 523, 565, 791, 1046, 1130, 1582, 2615, 2825, 3661, 3955, 5230, 5650, 7322, 7910, 13075, 18305, 19775, 26150, 36610, 39550, 59099, 91525, 118198, 183050, 295495, 413693, 590990, 827386, 1477475, 2068465, 2954950, 4136930, 10342325, 20684650]

約数ペア:

[(1, 20684650), (2, 10342325), (5, 4136930), (7, 2954950), (10, 2068465), (14, 1477475), (25, 827386), (35, 590990), (50, 413693), (70, 295495), (113, 183050), (175, 118198), (226, 91525), (350, 59099), (523, 39550), (565, 36610), (791, 26150), (1046, 19775), (1130, 18305), (1582, 13075), (2615, 7910), (2825, 7322), (3661, 5650), (3955, 5230)]