19881070

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1213}}^1$

素因数の和:1380

約数の個数: 32

約数和(自身を含む): 39333600

約数和(自身を除く): 19452530

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1213, 1490, 1639, 2426, 3278, 6065, 8195, 12130, 13343, 16390, 26686, 66715, 133430, 180737, 361474, 903685, 1807370, 1988107, 3976214, 9940535, 19881070]

約数ペア:

[(1, 19881070), (2, 9940535), (5, 3976214), (10, 1988107), (11, 1807370), (22, 903685), (55, 361474), (110, 180737), (149, 133430), (298, 66715), (745, 26686), (1213, 16390), (1490, 13343), (1639, 12130), (2426, 8195), (3278, 6065)]