18886979097

素因数分解:

$3^2\times 7^4\times {\mathrm{409}}^1\times {\mathrm{2137}}^1$

素因数の和:2580

約数の個数: 60

約数和(自身を含む): 31918907540

約数和(自身を除く): 13031928443

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 409, 441, 1029, 1227, 2137, 2401, 2863, 3087, 3681, 6411, 7203, 8589, 14959, 19233, 20041, 21609, 25767, 44877, 60123, 104713, 134631, 140287, 180369, 314139, 420861, 732991, 874033, 942417, 982009, 1262583, 2198973, 2622099, 2946027, 5130937, 6118231, 6596919, 7866297, 8838081, 15392811, 18354693, 42827617, 46178433, 55064079, 128482851, 299793319, 385448553, 899379957, 2098553233, 2698139871, 6295659699, 18886979097]

約数ペア:

[(1, 18886979097), (3, 6295659699), (7, 2698139871), (9, 2098553233), (21, 899379957), (49, 385448553), (63, 299793319), (147, 128482851), (343, 55064079), (409, 46178433), (441, 42827617), (1029, 18354693), (1227, 15392811), (2137, 8838081), (2401, 7866297), (2863, 6596919), (3087, 6118231), (3681, 5130937), (6411, 2946027), (7203, 2622099), (8589, 2198973), (14959, 1262583), (19233, 982009), (20041, 942417), (21609, 874033), (25767, 732991), (44877, 420861), (60123, 314139), (104713, 180369), (134631, 140287)]