7681730

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 16411896

約数和(自身を除く): 8730166

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 61, 70, 98, 122, 245, 257, 305, 427, 490, 514, 610, 854, 1285, 1799, 2135, 2570, 2989, 3598, 4270, 5978, 8995, 12593, 14945, 15677, 17990, 25186, 29890, 31354, 62965, 78385, 109739, 125930, 156770, 219478, 548695, 768173, 1097390, 1536346, 3840865, 7681730]

約数ペア:

[(1, 7681730), (2, 3840865), (5, 1536346), (7, 1097390), (10, 768173), (14, 548695), (35, 219478), (49, 156770), (61, 125930), (70, 109739), (98, 78385), (122, 62965), (245, 31354), (257, 29890), (305, 25186), (427, 17990), (490, 15677), (514, 14945), (610, 12593), (854, 8995), (1285, 5978), (1799, 4270), (2135, 3598), (2570, 2989)]