19970865

素因数分解:

$3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1427}}^1$

素因数の和:1749

約数の個数: 24

約数和(自身を含む): 34751808

約数和(自身を除く): 14780943

約数列:

[1, 3, 5, 9, 15, 45, 311, 933, 1427, 1555, 2799, 4281, 4665, 7135, 12843, 13995, 21405, 64215, 443797, 1331391, 2218985, 3994173, 6656955, 19970865]

約数ペア:

[(1, 19970865), (3, 6656955), (5, 3994173), (9, 2218985), (15, 1331391), (45, 443797), (311, 64215), (933, 21405), (1427, 13995), (1555, 12843), (2799, 7135), (4281, 4665)]