21962564

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:696

約数の個数: 36

約数和(自身を含む): 42472836

約数和(自身を除く): 20510272

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 169, 212, 338, 613, 676, 689, 1226, 1378, 2452, 2756, 7969, 8957, 15938, 17914, 31876, 32489, 35828, 64978, 103597, 129956, 207194, 414388, 422357, 844714, 1689428, 5490641, 10981282, 21962564]

約数ペア:

[(1, 21962564), (2, 10981282), (4, 5490641), (13, 1689428), (26, 844714), (52, 422357), (53, 414388), (106, 207194), (169, 129956), (212, 103597), (338, 64978), (613, 35828), (676, 32489), (689, 31876), (1226, 17914), (1378, 15938), (2452, 8957), (2756, 7969)]