20173902021

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{47279}}^1$

素因数の和:47826

約数の個数: 48

約数和(自身を含む): 35934312960

約数和(自身を除く): 15760410939

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 521, 819, 1563, 3647, 4689, 6773, 10941, 20319, 32823, 47279, 47411, 60957, 141837, 142233, 330953, 425511, 426699, 614627, 992859, 1843881, 2978577, 4302389, 5531643, 12907167, 24632359, 38721501, 73897077, 172426513, 221691231, 320220667, 517279539, 960662001, 1551838617, 2241544669, 2881986003, 6724634007, 20173902021]

約数ペア:

[(1, 20173902021), (3, 6724634007), (7, 2881986003), (9, 2241544669), (13, 1551838617), (21, 960662001), (39, 517279539), (63, 320220667), (91, 221691231), (117, 172426513), (273, 73897077), (521, 38721501), (819, 24632359), (1563, 12907167), (3647, 5531643), (4689, 4302389), (6773, 2978577), (10941, 1843881), (20319, 992859), (32823, 614627), (47279, 426699), (47411, 425511), (60957, 330953), (141837, 142233)]