80806804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 158336640

約数和(自身を除く): 77529836

約数列:

[1, 2, 4, 13, 26, 43, 52, 71, 86, 142, 172, 284, 509, 559, 923, 1018, 1118, 1846, 2036, 2236, 3053, 3692, 6106, 6617, 12212, 13234, 21887, 26468, 36139, 39689, 43774, 72278, 79378, 87548, 144556, 158756, 284531, 469807, 569062, 939614, 1138124, 1553977, 1879228, 3107954, 6215908, 20201701, 40403402, 80806804]

約数ペア:

[(1, 80806804), (2, 40403402), (4, 20201701), (13, 6215908), (26, 3107954), (43, 1879228), (52, 1553977), (71, 1138124), (86, 939614), (142, 569062), (172, 469807), (284, 284531), (509, 158756), (559, 144556), (923, 87548), (1018, 79378), (1118, 72278), (1846, 43774), (2036, 39689), (2236, 36139), (3053, 26468), (3692, 21887), (6106, 13234), (6617, 12212)]