20702647

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 26078640

約数和(自身を除く): 5375993

約数列:

[1, 7, 19, 37, 49, 133, 259, 601, 703, 931, 1813, 4207, 4921, 11419, 22237, 29449, 34447, 79933, 155659, 422503, 559531, 1089613, 2957521, 20702647]

約数ペア:

[(1, 20702647), (7, 2957521), (19, 1089613), (37, 559531), (49, 422503), (133, 155659), (259, 79933), (601, 34447), (703, 29449), (931, 22237), (1813, 11419), (4207, 4921)]