978003740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{997963}}^1$

素因数の和:997986

約数の個数: 36

約数和(自身を含む): 2389125816

約数和(自身を除く): 1411122076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 997963, 1995926, 3991852, 4989815, 6985741, 9979630, 13971482, 19959260, 27942964, 34928705, 48900187, 69857410, 97800374, 139714820, 195600748, 244500935, 489001870, 978003740]

約数ペア:

[(1, 978003740), (2, 489001870), (4, 244500935), (5, 195600748), (7, 139714820), (10, 97800374), (14, 69857410), (20, 48900187), (28, 34928705), (35, 27942964), (49, 19959260), (70, 13971482), (98, 9979630), (140, 6985741), (196, 4989815), (245, 3991852), (490, 1995926), (980, 997963)]