1981840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3539}}^1$

素因数の和:3559

約数の個数: 40

約数和(自身を含む): 5267520

約数和(自身を除く): 3285680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3539, 7078, 14156, 17695, 24773, 28312, 35390, 49546, 56624, 70780, 99092, 123865, 141560, 198184, 247730, 283120, 396368, 495460, 990920, 1981840]

約数ペア:

[(1, 1981840), (2, 990920), (4, 495460), (5, 396368), (7, 283120), (8, 247730), (10, 198184), (14, 141560), (16, 123865), (20, 99092), (28, 70780), (35, 56624), (40, 49546), (56, 35390), (70, 28312), (80, 24773), (112, 17695), (140, 14156), (280, 7078), (560, 3539)]