18500440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9439}}^1$

素因数の和:9464

約数の個数: 48

約数和(自身を含む): 48427200

約数和(自身を除く): 29926760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9439, 18878, 37756, 47195, 66073, 75512, 94390, 132146, 188780, 264292, 330365, 377560, 462511, 528584, 660730, 925022, 1321460, 1850044, 2312555, 2642920, 3700088, 4625110, 9250220, 18500440]

約数ペア:

[(1, 18500440), (2, 9250220), (4, 4625110), (5, 3700088), (7, 2642920), (8, 2312555), (10, 1850044), (14, 1321460), (20, 925022), (28, 660730), (35, 528584), (40, 462511), (49, 377560), (56, 330365), (70, 264292), (98, 188780), (140, 132146), (196, 94390), (245, 75512), (280, 66073), (392, 47195), (490, 37756), (980, 18878), (1960, 9439)]