19687275

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5147}}^1$

素因数の和:5180

約数の個数: 36

約数和(自身を含む): 37343592

約数和(自身を除く): 17656317

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5147, 15441, 25735, 46323, 77205, 87499, 128675, 231615, 262497, 386025, 437495, 787491, 1158075, 1312485, 2187475, 3937455, 6562425, 19687275]

約数ペア:

[(1, 19687275), (3, 6562425), (5, 3937455), (9, 2187475), (15, 1312485), (17, 1158075), (25, 787491), (45, 437495), (51, 386025), (75, 262497), (85, 231615), (153, 128675), (225, 87499), (255, 77205), (425, 46323), (765, 25735), (1275, 15441), (3825, 5147)]