20728372221

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1\times {\mathrm{20549}}^1$

素因数の和:20938

約数の個数: 48

約数和(自身を含む): 33468552000

約数和(自身を除く): 12740179779

約数列:

[1, 3, 9, 17, 19, 51, 57, 153, 171, 323, 347, 969, 1041, 2907, 3123, 5899, 6593, 17697, 19779, 20549, 53091, 59337, 61647, 112081, 184941, 336243, 349333, 390431, 1008729, 1047999, 1171293, 3143997, 3513879, 6637327, 7130503, 19911981, 21391509, 59735943, 64174527, 121218551, 135479557, 363655653, 406438671, 1090966959, 1219316013, 2303152469, 6909457407, 20728372221]

約数ペア:

[(1, 20728372221), (3, 6909457407), (9, 2303152469), (17, 1219316013), (19, 1090966959), (51, 406438671), (57, 363655653), (153, 135479557), (171, 121218551), (323, 64174527), (347, 59735943), (969, 21391509), (1041, 19911981), (2907, 7130503), (3123, 6637327), (5899, 3513879), (6593, 3143997), (17697, 1171293), (19779, 1047999), (20549, 1008729), (53091, 390431), (59337, 349333), (61647, 336243), (112081, 184941)]