18781424

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61781}}^1$

素因数の和:61808

約数の個数: 20

約数和(自身を含む): 38304840

約数和(自身を除く): 19523416

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 61781, 123562, 247124, 494248, 988496, 1173839, 2347678, 4695356, 9390712, 18781424]

約数ペア:

[(1, 18781424), (2, 9390712), (4, 4695356), (8, 2347678), (16, 1173839), (19, 988496), (38, 494248), (76, 247124), (152, 123562), (304, 61781)]