81561148

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 155441440

約数和(自身を除く): 73880292

約数列:

[1, 2, 4, 19, 38, 61, 73, 76, 122, 146, 241, 244, 292, 482, 964, 1159, 1387, 2318, 2774, 4453, 4579, 4636, 5548, 8906, 9158, 14701, 17593, 17812, 18316, 29402, 35186, 58804, 70372, 84607, 169214, 279319, 334267, 338428, 558638, 668534, 1073173, 1117276, 1337068, 2146346, 4292692, 20390287, 40780574, 81561148]

約数ペア:

[(1, 81561148), (2, 40780574), (4, 20390287), (19, 4292692), (38, 2146346), (61, 1337068), (73, 1117276), (76, 1073173), (122, 668534), (146, 558638), (241, 338428), (244, 334267), (292, 279319), (482, 169214), (964, 84607), (1159, 70372), (1387, 58804), (2318, 35186), (2774, 29402), (4453, 18316), (4579, 17812), (4636, 17593), (5548, 14701), (8906, 9158)]