20545720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39511}}^1$

素因数の和:39535

約数の個数: 32

約数和(自身を含む): 49785120

約数和(自身を除く): 29239400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39511, 79022, 158044, 197555, 316088, 395110, 513643, 790220, 1027286, 1580440, 2054572, 2568215, 4109144, 5136430, 10272860, 20545720]

約数ペア:

[(1, 20545720), (2, 10272860), (4, 5136430), (5, 4109144), (8, 2568215), (10, 2054572), (13, 1580440), (20, 1027286), (26, 790220), (40, 513643), (52, 395110), (65, 316088), (104, 197555), (130, 158044), (260, 79022), (520, 39511)]