20178245575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{42953}}^1$

素因数の和:43048

約数の個数: 48

約数和(自身を含む): 28122842880

約数和(自身を除く): 7944597305

約数列:

[1, 5, 19, 23, 25, 43, 95, 115, 215, 437, 475, 575, 817, 989, 1075, 2185, 4085, 4945, 10925, 18791, 20425, 24725, 42953, 93955, 214765, 469775, 816107, 987919, 1073825, 1846979, 4080535, 4939595, 9234895, 18770461, 20402675, 24697975, 35092601, 42480517, 46174475, 93852305, 175463005, 212402585, 469261525, 807129823, 877315025, 1062012925, 4035649115, 20178245575]

約数ペア:

[(1, 20178245575), (5, 4035649115), (19, 1062012925), (23, 877315025), (25, 807129823), (43, 469261525), (95, 212402585), (115, 175463005), (215, 93852305), (437, 46174475), (475, 42480517), (575, 35092601), (817, 24697975), (989, 20402675), (1075, 18770461), (2185, 9234895), (4085, 4939595), (4945, 4080535), (10925, 1846979), (18791, 1073825), (20425, 987919), (24725, 816107), (42953, 469775), (93955, 214765)]