20921328

素因数分解:

$2^4\times 3^5\times {\mathrm{5381}}^1$

素因数の和:5404

約数の個数: 60

約数和(自身を含む): 60730488

約数和(自身を除く): 39809160

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 243, 324, 432, 486, 648, 972, 1296, 1944, 3888, 5381, 10762, 16143, 21524, 32286, 43048, 48429, 64572, 86096, 96858, 129144, 145287, 193716, 258288, 290574, 387432, 435861, 581148, 774864, 871722, 1162296, 1307583, 1743444, 2324592, 2615166, 3486888, 5230332, 6973776, 10460664, 20921328]

約数ペア:

[(1, 20921328), (2, 10460664), (3, 6973776), (4, 5230332), (6, 3486888), (8, 2615166), (9, 2324592), (12, 1743444), (16, 1307583), (18, 1162296), (24, 871722), (27, 774864), (36, 581148), (48, 435861), (54, 387432), (72, 290574), (81, 258288), (108, 193716), (144, 145287), (162, 129144), (216, 96858), (243, 86096), (324, 64572), (432, 48429), (486, 43048), (648, 32286), (972, 21524), (1296, 16143), (1944, 10762), (3888, 5381)]