20952435

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 40771584

約数和(自身を除く): 19819149

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 41, 93, 105, 123, 155, 157, 205, 217, 287, 465, 471, 615, 651, 785, 861, 1085, 1099, 1271, 1435, 2355, 3255, 3297, 3813, 4305, 4867, 5495, 6355, 6437, 8897, 14601, 16485, 19065, 19311, 24335, 26691, 32185, 34069, 44485, 45059, 73005, 96555, 102207, 133455, 135177, 170345, 199547, 225295, 511035, 598641, 675885, 997735, 1396829, 2993205, 4190487, 6984145, 20952435]

約数ペア:

[(1, 20952435), (3, 6984145), (5, 4190487), (7, 2993205), (15, 1396829), (21, 997735), (31, 675885), (35, 598641), (41, 511035), (93, 225295), (105, 199547), (123, 170345), (155, 135177), (157, 133455), (205, 102207), (217, 96555), (287, 73005), (465, 45059), (471, 44485), (615, 34069), (651, 32185), (785, 26691), (861, 24335), (1085, 19311), (1099, 19065), (1271, 16485), (1435, 14601), (2355, 8897), (3255, 6437), (3297, 6355), (3813, 5495), (4305, 4867)]