20306155

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 27086400

約数和(自身を除く): 6780245

約数列:

[1, 5, 19, 37, 53, 95, 109, 185, 265, 545, 703, 1007, 1961, 2071, 3515, 4033, 5035, 5777, 9805, 10355, 20165, 28885, 37259, 76627, 109763, 186295, 213749, 383135, 548815, 1068745, 4061231, 20306155]

約数ペア:

[(1, 20306155), (5, 4061231), (19, 1068745), (37, 548815), (53, 383135), (95, 213749), (109, 186295), (185, 109763), (265, 76627), (545, 37259), (703, 28885), (1007, 20165), (1961, 10355), (2071, 9805), (3515, 5777), (4033, 5035)]