20811536

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4027}}^1$

素因数の和:4071

約数の個数: 40

約数和(自身を含む): 44952480

約数和(自身を除く): 24140944

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4027, 5168, 8054, 16108, 32216, 64432, 68459, 76513, 136918, 153026, 273836, 306052, 547672, 612104, 1095344, 1224208, 1300721, 2601442, 5202884, 10405768, 20811536]

約数ペア:

[(1, 20811536), (2, 10405768), (4, 5202884), (8, 2601442), (16, 1300721), (17, 1224208), (19, 1095344), (34, 612104), (38, 547672), (68, 306052), (76, 273836), (136, 153026), (152, 136918), (272, 76513), (304, 68459), (323, 64432), (646, 32216), (1292, 16108), (2584, 8054), (4027, 5168)]