21639904

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4729}}^1$

素因数の和:4763

約数の個数: 48

約数和(自身を含む): 50062320

約数和(自身を除く): 28422416

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 143, 176, 208, 286, 352, 416, 572, 1144, 2288, 4576, 4729, 9458, 18916, 37832, 52019, 61477, 75664, 104038, 122954, 151328, 208076, 245908, 416152, 491816, 676247, 832304, 983632, 1352494, 1664608, 1967264, 2704988, 5409976, 10819952, 21639904]

約数ペア:

[(1, 21639904), (2, 10819952), (4, 5409976), (8, 2704988), (11, 1967264), (13, 1664608), (16, 1352494), (22, 983632), (26, 832304), (32, 676247), (44, 491816), (52, 416152), (88, 245908), (104, 208076), (143, 151328), (176, 122954), (208, 104038), (286, 75664), (352, 61477), (416, 52019), (572, 37832), (1144, 18916), (2288, 9458), (4576, 4729)]