20540156

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{773}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 44904384

約数和(自身を除く): 24364228

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 73, 91, 146, 182, 292, 364, 511, 773, 949, 1022, 1546, 1898, 2044, 3092, 3796, 5411, 6643, 10049, 10822, 13286, 20098, 21644, 26572, 40196, 56429, 70343, 112858, 140686, 225716, 281372, 395003, 733577, 790006, 1467154, 1580012, 2934308, 5135039, 10270078, 20540156]

約数ペア:

[(1, 20540156), (2, 10270078), (4, 5135039), (7, 2934308), (13, 1580012), (14, 1467154), (26, 790006), (28, 733577), (52, 395003), (73, 281372), (91, 225716), (146, 140686), (182, 112858), (292, 70343), (364, 56429), (511, 40196), (773, 26572), (949, 21644), (1022, 20098), (1546, 13286), (1898, 10822), (2044, 10049), (3092, 6643), (3796, 5411)]