21000565465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1847}}^1\times {\mathrm{3389}}^1$

素因数の和:5313

約数の個数: 32

約数和(自身を含む): 27965710080

約数和(自身を除く): 6965144615

約数列:

[1, 5, 11, 55, 61, 305, 671, 1847, 3355, 3389, 9235, 16945, 20317, 37279, 101585, 112667, 186395, 206729, 563335, 1033645, 1239337, 2274019, 6196685, 6259483, 11370095, 31297415, 68854313, 344271565, 381828463, 1909142315, 4200113093, 21000565465]

約数ペア:

[(1, 21000565465), (5, 4200113093), (11, 1909142315), (55, 381828463), (61, 344271565), (305, 68854313), (671, 31297415), (1847, 11370095), (3355, 6259483), (3389, 6196685), (9235, 2274019), (16945, 1239337), (20317, 1033645), (37279, 563335), (101585, 206729), (112667, 186395)]