21387786

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{2113}}^1$

素因数の和:2366

約数の個数: 32

約数和(自身を含む): 49112448

約数和(自身を除く): 27724662

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 241, 482, 723, 1446, 1687, 2113, 3374, 4226, 5061, 6339, 10122, 12678, 14791, 29582, 44373, 88746, 509233, 1018466, 1527699, 3055398, 3564631, 7129262, 10693893, 21387786]

約数ペア:

[(1, 21387786), (2, 10693893), (3, 7129262), (6, 3564631), (7, 3055398), (14, 1527699), (21, 1018466), (42, 509233), (241, 88746), (482, 44373), (723, 29582), (1446, 14791), (1687, 12678), (2113, 10122), (3374, 6339), (4226, 5061)]