21676360

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 30578360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 127, 136, 170, 251, 254, 340, 502, 508, 635, 680, 1004, 1016, 1255, 1270, 2008, 2159, 2510, 2540, 4267, 4318, 5020, 5080, 8534, 8636, 10040, 10795, 17068, 17272, 21335, 21590, 31877, 34136, 42670, 43180, 63754, 85340, 86360, 127508, 159385, 170680, 255016, 318770, 541909, 637540, 1083818, 1275080, 2167636, 2709545, 4335272, 5419090, 10838180, 21676360]

約数ペア:

[(1, 21676360), (2, 10838180), (4, 5419090), (5, 4335272), (8, 2709545), (10, 2167636), (17, 1275080), (20, 1083818), (34, 637540), (40, 541909), (68, 318770), (85, 255016), (127, 170680), (136, 159385), (170, 127508), (251, 86360), (254, 85340), (340, 63754), (502, 43180), (508, 42670), (635, 34136), (680, 31877), (1004, 21590), (1016, 21335), (1255, 17272), (1270, 17068), (2008, 10795), (2159, 10040), (2510, 8636), (2540, 8534), (4267, 5080), (4318, 5020)]