21486231

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{809}}^1$

素因数の和:1055

約数の個数: 24

約数和(自身を含む): 33611760

約数和(自身を除く): 12125529

約数列:

[1, 3, 9, 13, 39, 117, 227, 681, 809, 2043, 2427, 2951, 7281, 8853, 10517, 26559, 31551, 94653, 183643, 550929, 1652787, 2387359, 7162077, 21486231]

約数ペア:

[(1, 21486231), (3, 7162077), (9, 2387359), (13, 1652787), (39, 550929), (117, 183643), (227, 94653), (681, 31551), (809, 26559), (2043, 10517), (2427, 8853), (2951, 7281)]