28081508

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 62741952

約数和(自身を除く): 34660444

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 103, 107, 182, 196, 206, 214, 364, 412, 428, 637, 721, 749, 1274, 1339, 1391, 1442, 1498, 2548, 2678, 2782, 2884, 2996, 5047, 5243, 5356, 5564, 9373, 9737, 10094, 10486, 11021, 18746, 19474, 20188, 20972, 22042, 37492, 38948, 44084, 65611, 68159, 77147, 131222, 136318, 143273, 154294, 262444, 272636, 286546, 308588, 540029, 573092, 1002911, 1080058, 2005822, 2160116, 4011644, 7020377, 14040754, 28081508]

約数ペア:

[(1, 28081508), (2, 14040754), (4, 7020377), (7, 4011644), (13, 2160116), (14, 2005822), (26, 1080058), (28, 1002911), (49, 573092), (52, 540029), (91, 308588), (98, 286546), (103, 272636), (107, 262444), (182, 154294), (196, 143273), (206, 136318), (214, 131222), (364, 77147), (412, 68159), (428, 65611), (637, 44084), (721, 38948), (749, 37492), (1274, 22042), (1339, 20972), (1391, 20188), (1442, 19474), (1498, 18746), (2548, 11021), (2678, 10486), (2782, 10094), (2884, 9737), (2996, 9373), (5047, 5564), (5243, 5356)]