2490320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{4447}}^1$

素因数の和:4467

約数の個数: 40

約数和(自身を含む): 6618624

約数和(自身を除く): 4128304

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 4447, 8894, 17788, 22235, 31129, 35576, 44470, 62258, 71152, 88940, 124516, 155645, 177880, 249032, 311290, 355760, 498064, 622580, 1245160, 2490320]

約数ペア:

[(1, 2490320), (2, 1245160), (4, 622580), (5, 498064), (7, 355760), (8, 311290), (10, 249032), (14, 177880), (16, 155645), (20, 124516), (28, 88940), (35, 71152), (40, 62258), (56, 44470), (70, 35576), (80, 31129), (112, 22235), (140, 17788), (280, 8894), (560, 4447)]