21506492

素因数分解:

$2^2\times 7^2\times {\mathrm{179}}^1\times {\mathrm{613}}^1$

素因数の和:810

約数の個数: 36

約数和(自身を含む): 44097480

約数和(自身を除く): 22590988

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 179, 196, 358, 613, 716, 1226, 1253, 2452, 2506, 4291, 5012, 8582, 8771, 17164, 17542, 30037, 35084, 60074, 109727, 120148, 219454, 438908, 768089, 1536178, 3072356, 5376623, 10753246, 21506492]

約数ペア:

[(1, 21506492), (2, 10753246), (4, 5376623), (7, 3072356), (14, 1536178), (28, 768089), (49, 438908), (98, 219454), (179, 120148), (196, 109727), (358, 60074), (613, 35084), (716, 30037), (1226, 17542), (1253, 17164), (2452, 8771), (2506, 8582), (4291, 5012)]