21276928

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{4889}}^1$

素因数の和:4922

約数の個数: 36

約数和(自身を含む): 44978220

約数和(自身を除く): 23701292

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 544, 1088, 2176, 4352, 4889, 9778, 19556, 39112, 78224, 83113, 156448, 166226, 312896, 332452, 625792, 664904, 1251584, 1329808, 2659616, 5319232, 10638464, 21276928]

約数ペア:

[(1, 21276928), (2, 10638464), (4, 5319232), (8, 2659616), (16, 1329808), (17, 1251584), (32, 664904), (34, 625792), (64, 332452), (68, 312896), (128, 166226), (136, 156448), (256, 83113), (272, 78224), (544, 39112), (1088, 19556), (2176, 9778), (4352, 4889)]