21947840

素因数分解:

$2^6\times 5^1\times {\mathrm{107}}^1\times {\mathrm{641}}^1$

素因数の和:765

約数の個数: 56

約数和(自身を含む): 52834032

約数和(自身を除く): 30886192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 160, 214, 320, 428, 535, 641, 856, 1070, 1282, 1712, 2140, 2564, 3205, 3424, 4280, 5128, 6410, 6848, 8560, 10256, 12820, 17120, 20512, 25640, 34240, 41024, 51280, 68587, 102560, 137174, 205120, 274348, 342935, 548696, 685870, 1097392, 1371740, 2194784, 2743480, 4389568, 5486960, 10973920, 21947840]

約数ペア:

[(1, 21947840), (2, 10973920), (4, 5486960), (5, 4389568), (8, 2743480), (10, 2194784), (16, 1371740), (20, 1097392), (32, 685870), (40, 548696), (64, 342935), (80, 274348), (107, 205120), (160, 137174), (214, 102560), (320, 68587), (428, 51280), (535, 41024), (641, 34240), (856, 25640), (1070, 20512), (1282, 17120), (1712, 12820), (2140, 10256), (2564, 8560), (3205, 6848), (3424, 6410), (4280, 5128)]