21278770

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 39341952

約数和(自身を除く): 18063182

約数列:

[1, 2, 5, 10, 73, 103, 146, 206, 283, 365, 515, 566, 730, 1030, 1415, 2830, 7519, 15038, 20659, 29149, 37595, 41318, 58298, 75190, 103295, 145745, 206590, 291490, 2127877, 4255754, 10639385, 21278770]

約数ペア:

[(1, 21278770), (2, 10639385), (5, 4255754), (10, 2127877), (73, 291490), (103, 206590), (146, 145745), (206, 103295), (283, 75190), (365, 58298), (515, 41318), (566, 37595), (730, 29149), (1030, 20659), (1415, 15038), (2830, 7519)]