21056812

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1427}}^1$

素因数の和:1486

約数の個数: 48

約数和(自身を含む): 46061568

約数和(自身を除く): 25004756

約数列:

[1, 2, 4, 7, 14, 17, 28, 31, 34, 62, 68, 119, 124, 217, 238, 434, 476, 527, 868, 1054, 1427, 2108, 2854, 3689, 5708, 7378, 9989, 14756, 19978, 24259, 39956, 44237, 48518, 88474, 97036, 169813, 176948, 309659, 339626, 619318, 679252, 752029, 1238636, 1504058, 3008116, 5264203, 10528406, 21056812]

約数ペア:

[(1, 21056812), (2, 10528406), (4, 5264203), (7, 3008116), (14, 1504058), (17, 1238636), (28, 752029), (31, 679252), (34, 619318), (62, 339626), (68, 309659), (119, 176948), (124, 169813), (217, 97036), (238, 88474), (434, 48518), (476, 44237), (527, 39956), (868, 24259), (1054, 19978), (1427, 14756), (2108, 9989), (2854, 7378), (3689, 5708)]