213017895

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{491}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 383145984

約数和(自身を除く): 170128089

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 311, 465, 491, 933, 1395, 1473, 1555, 2455, 2799, 4419, 4665, 7365, 9641, 13995, 15221, 22095, 28923, 45663, 48205, 76105, 86769, 136989, 144615, 152701, 228315, 433845, 458103, 684945, 763505, 1374309, 2290515, 4733731, 6871545, 14201193, 23668655, 42603579, 71005965, 213017895]

約数ペア:

[(1, 213017895), (3, 71005965), (5, 42603579), (9, 23668655), (15, 14201193), (31, 6871545), (45, 4733731), (93, 2290515), (155, 1374309), (279, 763505), (311, 684945), (465, 458103), (491, 433845), (933, 228315), (1395, 152701), (1473, 144615), (1555, 136989), (2455, 86769), (2799, 76105), (4419, 48205), (4665, 45663), (7365, 28923), (9641, 22095), (13995, 15221)]