21998295

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2339}}^1$

素因数の和:2380

約数の個数: 48

約数和(自身を含む): 43804800

約数和(自身を除く): 21806505

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2339, 3135, 7017, 9405, 11695, 21051, 25729, 35085, 44441, 77187, 105255, 128645, 133323, 222205, 231561, 385935, 399969, 488851, 666615, 1157805, 1466553, 1999845, 2444255, 4399659, 7332765, 21998295]

約数ペア:

[(1, 21998295), (3, 7332765), (5, 4399659), (9, 2444255), (11, 1999845), (15, 1466553), (19, 1157805), (33, 666615), (45, 488851), (55, 399969), (57, 385935), (95, 231561), (99, 222205), (165, 133323), (171, 128645), (209, 105255), (285, 77187), (495, 44441), (627, 35085), (855, 25729), (1045, 21051), (1881, 11695), (2339, 9405), (3135, 7017)]