20438320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36497}}^1$

素因数の和:36517

約数の個数: 40

約数和(自身を含む): 54309024

約数和(自身を除く): 33870704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36497, 72994, 145988, 182485, 255479, 291976, 364970, 510958, 583952, 729940, 1021916, 1277395, 1459880, 2043832, 2554790, 2919760, 4087664, 5109580, 10219160, 20438320]

約数ペア:

[(1, 20438320), (2, 10219160), (4, 5109580), (5, 4087664), (7, 2919760), (8, 2554790), (10, 2043832), (14, 1459880), (16, 1277395), (20, 1021916), (28, 729940), (35, 583952), (40, 510958), (56, 364970), (70, 291976), (80, 255479), (112, 182485), (140, 145988), (280, 72994), (560, 36497)]