21312784

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:715

約数の個数: 40

約数和(自身を含む): 43169112

約数和(自身を除く): 21856328

約数列:

[1, 2, 4, 8, 16, 41, 53, 82, 106, 164, 212, 328, 424, 613, 656, 848, 1226, 2173, 2452, 4346, 4904, 8692, 9808, 17384, 25133, 32489, 34768, 50266, 64978, 100532, 129956, 201064, 259912, 402128, 519824, 1332049, 2664098, 5328196, 10656392, 21312784]

約数ペア:

[(1, 21312784), (2, 10656392), (4, 5328196), (8, 2664098), (16, 1332049), (41, 519824), (53, 402128), (82, 259912), (106, 201064), (164, 129956), (212, 100532), (328, 64978), (424, 50266), (613, 34768), (656, 32489), (848, 25133), (1226, 17384), (2173, 9808), (2452, 8692), (4346, 4904)]