139580420

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{20347}}^1$

素因数の和:20377

約数の個数: 48

約数和(自身を含む): 341846400

約数和(自身を除く): 202265980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 20347, 40694, 81388, 101735, 142429, 203470, 284858, 406940, 569716, 712145, 997003, 1424290, 1994006, 2848580, 3988012, 4985015, 6979021, 9970030, 13958042, 19940060, 27916084, 34895105, 69790210, 139580420]

約数ペア:

[(1, 139580420), (2, 69790210), (4, 34895105), (5, 27916084), (7, 19940060), (10, 13958042), (14, 9970030), (20, 6979021), (28, 4985015), (35, 3988012), (49, 2848580), (70, 1994006), (98, 1424290), (140, 997003), (196, 712145), (245, 569716), (343, 406940), (490, 284858), (686, 203470), (980, 142429), (1372, 101735), (1715, 81388), (3430, 40694), (6860, 20347)]