28176260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{643}}^1$

素因数の和:972

約数の個数: 48

約数和(自身を含む): 67944576

約数和(自身を除く): 39768316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 313, 626, 643, 1252, 1286, 1565, 2191, 2572, 3130, 3215, 4382, 4501, 6260, 6430, 8764, 9002, 10955, 12860, 18004, 21910, 22505, 43820, 45010, 90020, 201259, 402518, 805036, 1006295, 1408813, 2012590, 2817626, 4025180, 5635252, 7044065, 14088130, 28176260]

約数ペア:

[(1, 28176260), (2, 14088130), (4, 7044065), (5, 5635252), (7, 4025180), (10, 2817626), (14, 2012590), (20, 1408813), (28, 1006295), (35, 805036), (70, 402518), (140, 201259), (313, 90020), (626, 45010), (643, 43820), (1252, 22505), (1286, 21910), (1565, 18004), (2191, 12860), (2572, 10955), (3130, 9002), (3215, 8764), (4382, 6430), (4501, 6260)]