20638278

素因数分解:

$2^1\times 3^2\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:341

約数の個数: 48

約数和(自身を含む): 46091760

約数和(自身を除く): 25453482

約数列:

[1, 2, 3, 6, 9, 18, 67, 109, 134, 157, 201, 218, 314, 327, 402, 471, 603, 654, 942, 981, 1206, 1413, 1962, 2826, 7303, 10519, 14606, 17113, 21038, 21909, 31557, 34226, 43818, 51339, 63114, 65727, 94671, 102678, 131454, 154017, 189342, 308034, 1146571, 2293142, 3439713, 6879426, 10319139, 20638278]

約数ペア:

[(1, 20638278), (2, 10319139), (3, 6879426), (6, 3439713), (9, 2293142), (18, 1146571), (67, 308034), (109, 189342), (134, 154017), (157, 131454), (201, 102678), (218, 94671), (314, 65727), (327, 63114), (402, 51339), (471, 43818), (603, 34226), (654, 31557), (942, 21909), (981, 21038), (1206, 17113), (1413, 14606), (1962, 10519), (2826, 7303)]