21000643184

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{175873}}^1$

素因数の和:176337

約数の個数: 40

約数和(自身を含む): 43180584480

約数和(自身を除く): 22179941296

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 439, 878, 1756, 3512, 7024, 7463, 14926, 29852, 59704, 119408, 175873, 351746, 703492, 1406984, 2813968, 2989841, 5979682, 11959364, 23918728, 47837456, 77208247, 154416494, 308832988, 617665976, 1235331952, 1312540199, 2625080398, 5250160796, 10500321592, 21000643184]

約数ペア:

[(1, 21000643184), (2, 10500321592), (4, 5250160796), (8, 2625080398), (16, 1312540199), (17, 1235331952), (34, 617665976), (68, 308832988), (136, 154416494), (272, 77208247), (439, 47837456), (878, 23918728), (1756, 11959364), (3512, 5979682), (7024, 2989841), (7463, 2813968), (14926, 1406984), (29852, 703492), (59704, 351746), (119408, 175873)]