20847978

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1297}}^1$

素因数の和:1371

約数の個数: 48

約数和(自身を含む): 48597120

約数和(自身を除く): 27749142

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 47, 57, 94, 114, 141, 171, 282, 342, 423, 846, 893, 1297, 1786, 2594, 2679, 3891, 5358, 7782, 8037, 11673, 16074, 23346, 24643, 49286, 60959, 73929, 121918, 147858, 182877, 221787, 365754, 443574, 548631, 1097262, 1158221, 2316442, 3474663, 6949326, 10423989, 20847978]

約数ペア:

[(1, 20847978), (2, 10423989), (3, 6949326), (6, 3474663), (9, 2316442), (18, 1158221), (19, 1097262), (38, 548631), (47, 443574), (57, 365754), (94, 221787), (114, 182877), (141, 147858), (171, 121918), (282, 73929), (342, 60959), (423, 49286), (846, 24643), (893, 23346), (1297, 16074), (1786, 11673), (2594, 8037), (2679, 7782), (3891, 5358)]