21560085

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 40120704

約数和(自身を除く): 18560619

約数列:

[1, 3, 5, 9, 15, 23, 37, 45, 69, 111, 115, 185, 207, 333, 345, 555, 563, 851, 1035, 1665, 1689, 2553, 2815, 4255, 5067, 7659, 8445, 12765, 12949, 20831, 25335, 38295, 38847, 62493, 64745, 104155, 116541, 187479, 194235, 312465, 479113, 582705, 937395, 1437339, 2395565, 4312017, 7186695, 21560085]

約数ペア:

[(1, 21560085), (3, 7186695), (5, 4312017), (9, 2395565), (15, 1437339), (23, 937395), (37, 582705), (45, 479113), (69, 312465), (111, 194235), (115, 187479), (185, 116541), (207, 104155), (333, 64745), (345, 62493), (555, 38847), (563, 38295), (851, 25335), (1035, 20831), (1665, 12949), (1689, 12765), (2553, 8445), (2815, 7659), (4255, 5067)]