20147540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6257}}^1$

素因数の和:6296

約数の個数: 48

約数和(自身を含む): 50464512

約数和(自身を除く): 30316972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6257, 12514, 25028, 31285, 43799, 62570, 87598, 125140, 143911, 175196, 218995, 287822, 437990, 575644, 719555, 875980, 1007377, 1439110, 2014754, 2878220, 4029508, 5036885, 10073770, 20147540]

約数ペア:

[(1, 20147540), (2, 10073770), (4, 5036885), (5, 4029508), (7, 2878220), (10, 2014754), (14, 1439110), (20, 1007377), (23, 875980), (28, 719555), (35, 575644), (46, 437990), (70, 287822), (92, 218995), (115, 175196), (140, 143911), (161, 125140), (230, 87598), (322, 62570), (460, 43799), (644, 31285), (805, 25028), (1610, 12514), (3220, 6257)]