18123898

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:143

約数の個数: 36

約数和(自身を含む): 31177710

約数和(自身を除く): 13053812

約数列:

[1, 2, 13, 26, 29, 43, 58, 86, 169, 338, 377, 559, 754, 1118, 1247, 1849, 2494, 3698, 4901, 7267, 9802, 14534, 16211, 24037, 32422, 48074, 53621, 107242, 210743, 312481, 421486, 624962, 697073, 1394146, 9061949, 18123898]

約数ペア:

[(1, 18123898), (2, 9061949), (13, 1394146), (26, 697073), (29, 624962), (43, 421486), (58, 312481), (86, 210743), (169, 107242), (338, 53621), (377, 48074), (559, 32422), (754, 24037), (1118, 16211), (1247, 14534), (1849, 9802), (2494, 7267), (3698, 4901)]