20871824

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:375

約数の個数: 40

約数和(自身を含む): 41729472

約数和(自身を除く): 20857648

約数列:

[1, 2, 4, 8, 16, 53, 106, 151, 163, 212, 302, 326, 424, 604, 652, 848, 1208, 1304, 2416, 2608, 8003, 8639, 16006, 17278, 24613, 32012, 34556, 49226, 64024, 69112, 98452, 128048, 138224, 196904, 393808, 1304489, 2608978, 5217956, 10435912, 20871824]

約数ペア:

[(1, 20871824), (2, 10435912), (4, 5217956), (8, 2608978), (16, 1304489), (53, 393808), (106, 196904), (151, 138224), (163, 128048), (212, 98452), (302, 69112), (326, 64024), (424, 49226), (604, 34556), (652, 32012), (848, 24613), (1208, 17278), (1304, 16006), (2416, 8639), (2608, 8003)]