20256225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 37449984

約数和(自身を除く): 17193759

約数列:

[1, 3, 5, 11, 15, 25, 33, 43, 55, 75, 129, 165, 215, 275, 473, 571, 645, 825, 1075, 1419, 1713, 2365, 2855, 3225, 6281, 7095, 8565, 11825, 14275, 18843, 24553, 31405, 35475, 42825, 73659, 94215, 122765, 157025, 270083, 368295, 471075, 613825, 810249, 1350415, 1841475, 4051245, 6752075, 20256225]

約数ペア:

[(1, 20256225), (3, 6752075), (5, 4051245), (11, 1841475), (15, 1350415), (25, 810249), (33, 613825), (43, 471075), (55, 368295), (75, 270083), (129, 157025), (165, 122765), (215, 94215), (275, 73659), (473, 42825), (571, 35475), (645, 31405), (825, 24553), (1075, 18843), (1419, 14275), (1713, 11825), (2365, 8565), (2855, 7095), (3225, 6281)]