20852416

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:449

約数の個数: 56

約数和(自身を含む): 45317664

約数和(自身を除く): 24465248

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 71, 104, 142, 208, 284, 353, 416, 568, 706, 832, 923, 1136, 1412, 1846, 2272, 2824, 3692, 4544, 4589, 5648, 7384, 9178, 11296, 14768, 18356, 22592, 25063, 29536, 36712, 50126, 59072, 73424, 100252, 146848, 200504, 293696, 325819, 401008, 651638, 802016, 1303276, 1604032, 2606552, 5213104, 10426208, 20852416]

約数ペア:

[(1, 20852416), (2, 10426208), (4, 5213104), (8, 2606552), (13, 1604032), (16, 1303276), (26, 802016), (32, 651638), (52, 401008), (64, 325819), (71, 293696), (104, 200504), (142, 146848), (208, 100252), (284, 73424), (353, 59072), (416, 50126), (568, 36712), (706, 29536), (832, 25063), (923, 22592), (1136, 18356), (1412, 14768), (1846, 11296), (2272, 9178), (2824, 7384), (3692, 5648), (4544, 4589)]