18681568

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:571

約数の個数: 48

約数和(自身を含む): 39054960

約数和(自身を除く): 20373392

約数列:

[1, 2, 4, 8, 16, 29, 32, 41, 58, 82, 116, 164, 232, 328, 464, 491, 656, 928, 982, 1189, 1312, 1964, 2378, 3928, 4756, 7856, 9512, 14239, 15712, 19024, 20131, 28478, 38048, 40262, 56956, 80524, 113912, 161048, 227824, 322096, 455648, 583799, 644192, 1167598, 2335196, 4670392, 9340784, 18681568]

約数ペア:

[(1, 18681568), (2, 9340784), (4, 4670392), (8, 2335196), (16, 1167598), (29, 644192), (32, 583799), (41, 455648), (58, 322096), (82, 227824), (116, 161048), (164, 113912), (232, 80524), (328, 56956), (464, 40262), (491, 38048), (656, 28478), (928, 20131), (982, 19024), (1189, 15712), (1312, 14239), (1964, 9512), (2378, 7856), (3928, 4756)]