216121490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{10589}}^1$

素因数の和:10766

約数の個数: 32

約数和(自身を含む): 421651440

約数和(自身を除く): 205529950

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 1570, 2041, 4082, 10205, 10589, 20410, 21178, 52945, 105890, 137657, 275314, 688285, 1376570, 1662473, 3324946, 8312365, 16624730, 21612149, 43224298, 108060745, 216121490]

約数ペア:

[(1, 216121490), (2, 108060745), (5, 43224298), (10, 21612149), (13, 16624730), (26, 8312365), (65, 3324946), (130, 1662473), (157, 1376570), (314, 688285), (785, 275314), (1570, 137657), (2041, 105890), (4082, 52945), (10205, 21178), (10589, 20410)]