20730248

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{461}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 49230720

約数和(自身を除く): 28500472

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 73, 77, 88, 146, 154, 292, 308, 461, 511, 584, 616, 803, 922, 1022, 1606, 1844, 2044, 3212, 3227, 3688, 4088, 5071, 5621, 6424, 6454, 10142, 11242, 12908, 20284, 22484, 25816, 33653, 35497, 40568, 44968, 67306, 70994, 134612, 141988, 235571, 269224, 283976, 370183, 471142, 740366, 942284, 1480732, 1884568, 2591281, 2961464, 5182562, 10365124, 20730248]

約数ペア:

[(1, 20730248), (2, 10365124), (4, 5182562), (7, 2961464), (8, 2591281), (11, 1884568), (14, 1480732), (22, 942284), (28, 740366), (44, 471142), (56, 370183), (73, 283976), (77, 269224), (88, 235571), (146, 141988), (154, 134612), (292, 70994), (308, 67306), (461, 44968), (511, 40568), (584, 35497), (616, 33653), (803, 25816), (922, 22484), (1022, 20284), (1606, 12908), (1844, 11242), (2044, 10142), (3212, 6454), (3227, 6424), (3688, 5621), (4088, 5071)]