1387820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 3483648

約数和(自身を除く): 2095828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 431, 460, 644, 805, 862, 1610, 1724, 2155, 3017, 3220, 4310, 6034, 8620, 9913, 12068, 15085, 19826, 30170, 39652, 49565, 60340, 69391, 99130, 138782, 198260, 277564, 346955, 693910, 1387820]

約数ペア:

[(1, 1387820), (2, 693910), (4, 346955), (5, 277564), (7, 198260), (10, 138782), (14, 99130), (20, 69391), (23, 60340), (28, 49565), (35, 39652), (46, 30170), (70, 19826), (92, 15085), (115, 12068), (140, 9913), (161, 8620), (230, 6034), (322, 4310), (431, 3220), (460, 3017), (644, 2155), (805, 1724), (862, 1610)]