990920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{3539}}^1$

素因数の和:3557

約数の個数: 32

約数和(自身を含む): 2548800

約数和(自身を除く): 1557880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 3539, 7078, 14156, 17695, 24773, 28312, 35390, 49546, 70780, 99092, 123865, 141560, 198184, 247730, 495460, 990920]

約数ペア:

[(1, 990920), (2, 495460), (4, 247730), (5, 198184), (7, 141560), (8, 123865), (10, 99092), (14, 70780), (20, 49546), (28, 35390), (35, 28312), (40, 24773), (56, 17695), (70, 14156), (140, 7078), (280, 3539)]