18439760

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4349}}^1$

素因数の和:4415

約数の個数: 40

約数和(自身を含む): 43691400

約数和(自身を除く): 25251640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4349, 8698, 17396, 21745, 34792, 43490, 69584, 86980, 173960, 230497, 347920, 460994, 921988, 1152485, 1843976, 2304970, 3687952, 4609940, 9219880, 18439760]

約数ペア:

[(1, 18439760), (2, 9219880), (4, 4609940), (5, 3687952), (8, 2304970), (10, 1843976), (16, 1152485), (20, 921988), (40, 460994), (53, 347920), (80, 230497), (106, 173960), (212, 86980), (265, 69584), (424, 43490), (530, 34792), (848, 21745), (1060, 17396), (2120, 8698), (4240, 4349)]