20628736

素因数分解:

$2^8\times {\mathrm{61}}^1\times {\mathrm{1321}}^1$

素因数の和:1398

約数の個数: 36

約数和(自身を含む): 41883604

約数和(自身を除く): 21254868

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 256, 488, 976, 1321, 1952, 2642, 3904, 5284, 7808, 10568, 15616, 21136, 42272, 80581, 84544, 161162, 169088, 322324, 338176, 644648, 1289296, 2578592, 5157184, 10314368, 20628736]

約数ペア:

[(1, 20628736), (2, 10314368), (4, 5157184), (8, 2578592), (16, 1289296), (32, 644648), (61, 338176), (64, 322324), (122, 169088), (128, 161162), (244, 84544), (256, 80581), (488, 42272), (976, 21136), (1321, 15616), (1952, 10568), (2642, 7808), (3904, 5284)]