19787240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44971}}^1$

素因数の和:44993

約数の個数: 32

約数和(自身を含む): 48569760

約数和(自身を除く): 28782520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 44971, 89942, 179884, 224855, 359768, 449710, 494681, 899420, 989362, 1798840, 1978724, 2473405, 3957448, 4946810, 9893620, 19787240]

約数ペア:

[(1, 19787240), (2, 9893620), (4, 4946810), (5, 3957448), (8, 2473405), (10, 1978724), (11, 1798840), (20, 989362), (22, 899420), (40, 494681), (44, 449710), (55, 359768), (88, 224855), (110, 179884), (220, 89942), (440, 44971)]