28663100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6991}}^1$

素因数の和:7046

約数の個数: 36

約数和(自身を含む): 63725088

約数和(自身を除く): 35061988

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 6991, 13982, 27964, 34955, 69910, 139820, 174775, 286631, 349550, 573262, 699100, 1146524, 1433155, 2866310, 5732620, 7165775, 14331550, 28663100]

約数ペア:

[(1, 28663100), (2, 14331550), (4, 7165775), (5, 5732620), (10, 2866310), (20, 1433155), (25, 1146524), (41, 699100), (50, 573262), (82, 349550), (100, 286631), (164, 174775), (205, 139820), (410, 69910), (820, 34955), (1025, 27964), (2050, 13982), (4100, 6991)]