20977545

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 34974720

約数和(自身を除く): 13997175

約数列:

[1, 3, 5, 15, 31, 93, 155, 197, 229, 465, 591, 687, 985, 1145, 2955, 3435, 6107, 7099, 18321, 21297, 30535, 35495, 45113, 91605, 106485, 135339, 225565, 676695, 1398503, 4195509, 6992515, 20977545]

約数ペア:

[(1, 20977545), (3, 6992515), (5, 4195509), (15, 1398503), (31, 676695), (93, 225565), (155, 135339), (197, 106485), (229, 91605), (465, 45113), (591, 35495), (687, 30535), (985, 21297), (1145, 18321), (2955, 7099), (3435, 6107)]