20497295

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2371}}^1$

素因数の和:2415

約数の個数: 32

約数和(自身を含む): 31879680

約数和(自身を除く): 11382385

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 2371, 8645, 11855, 16597, 30823, 45049, 82985, 154115, 215761, 225245, 315343, 585637, 1078805, 1576715, 2928185, 4099459, 20497295]

約数ペア:

[(1, 20497295), (5, 4099459), (7, 2928185), (13, 1576715), (19, 1078805), (35, 585637), (65, 315343), (91, 225245), (95, 215761), (133, 154115), (247, 82985), (455, 45049), (665, 30823), (1235, 16597), (1729, 11855), (2371, 8645)]